diff --git a/Windows/AcitveDirectory/usersignatures.md b/Windows/AcitveDirectory/usersignatures.md
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+# Requirements
+1. ".env" Datei im gleichen Verzeichnis, wie das, in dem das Powershell Script gesichert wird.
+2. "template.txt", "template.html", "template.rtf" ebenfalls in dem jeweiligen Verzeichnis ablegen.
+
+## Aufbau: .env Datei
+
+```
+AD_OUPath=OU=...,OU=...,OU=...,DC=contoso,DC=org
+SIGNATURE_PATH=C:\Scripts\Sinatures
+DEBUG=0
+```
+
+Die Werte sind Beispielwerte und entsprechend anzupassen. Debug gibt Rückmeldungen in der Powershell.
+
+## Aufbau: template Dateien
+
+In den Templates werden Platzhalter genutzt um die Variablen zu ersetzen mit den Werten aus dem AD.
+
+[VORNAME]
+[NACHNAME]
+[JOB]
+[DEPARTMENT]
+[PHONE]
+[PLAIN_PHONE]
+[EMAIL]
+
+Ich selbst habe den Teil innerhalb der Templates so gestaltet, dass es "[JOB] | [DEPARTMENT]" gibt. Wenn ein User keine JOB Bezeichnung im AD hat, würde das automatisch ersetzt werden durch "[DEPARTMENT]".
+
+Da ich auch Links beim Klicken auf Icons nutze, muss die Telefonnummer etwas angepasst werden in der html Template Datei. Dafür habe ich im "tel:" Bereich ein "[PLAIN_PHONE]" gesetzt.
+
+## Powershell Script:
+
+```powershell
+Canvas [Console]::OutputEncoding = [Text.Encoding]::UTF8
+
+###############################################################################
+# 0) FUNKTION ZUR DEBUG-AUSGABE
+###############################################################################
+function Write-HostIfDebug {
+    param(
+        [Parameter(Mandatory=$true)]
+        [string]$Message,
+
+        # Der Typ hier ist entfernt, damit null oder eine valide Farbe möglich ist.
+        $ForegroundColor
+    )
+
+    if ($Env:DEBUG -eq "1") {
+        if ($ForegroundColor) {
+            Write-Host $Message -ForegroundColor $ForegroundColor
+        } else {
+            Write-Host $Message
+        }
+    }
+}
+
+###############################################################################
+# 1) SIGNATUREN-LOGIK
+###############################################################################
+function ConvertPhoneForHtml($phone) {
+    if (![string]::IsNullOrEmpty($phone)) {
+        $phone = $phone -replace " ", " ​"
+        $phone = $phone -replace "-", " ​- ​"
+    }
+    return $phone
+}
+
+function ConvertEmailForHtml($mail) {
+    if (![string]::IsNullOrEmpty($mail)) {
+        $mail = $mail -replace "\\.", ".​"
+        $mail = $mail -replace "@", "@​"
+        $mail = $mail -replace "-", "-​"
+    }
+    return $mail
+}
+
+# .env einlesen
+$envFile = Join-Path $PSScriptRoot '.env'
+if (Test-Path $envFile) {
+    Get-Content -Path $envFile | ForEach-Object {
+        if ($_ -match '^(?<key>[^=]+)=(?<value>.*)$') {
+            $key = $Matches['key']
+            $value = $Matches['value']
+            Set-Item -Path "Env:$key" -Value $value
+        }
+    }
+} else {
+    Write-HostIfDebug ".env-Datei wurde nicht gefunden. Bitte stelle sicher, dass sie im gleichen Verzeichnis liegt."
+    return
+}
+
+# Pfade aus .env
+$ouPath         = $Env:AD_OUPath
+$signaturePath  = $Env:SIGNATURE_PATH
+
+if (!$ouPath) {
+    Write-HostIfDebug "Bitte überprüfe, ob in der .env-Datei die Variable 'AD_OUPath' eingetragen ist."
+    return
+}
+
+if (![string]::IsNullOrEmpty($signaturePath)) {
+    if (!(Test-Path $signaturePath)) {
+        Write-HostIfDebug "Der Pfad '$signaturePath' existiert nicht. Bitte überprüfen."
+        return
+    }
+} else {
+    Write-HostIfDebug "Bitte überprüfe, ob in der .env-Datei die Variable 'SIGNATURE_PATH' eingetragen ist."
+    return
+}
+
+Write-HostIfDebug "Suche nach Benutzern in der OU: $ouPath..."
+
+# Benutzer holen (und sortieren)
+$users = Get-ADUser -Filter * -SearchBase $ouPath -Properties cn, givenName, sn, telephoneNumber, mail, title, department
+Write-HostIfDebug "Gefundene Benutzer:`n"
+
+$global:AllUsers = $users |
+    Sort-Object -Property sn, givenName |
+    ForEach-Object {
+        [PSCustomObject]@{
+            Selected    = $false
+            CN          = $_.cn
+            ADUser      = $_
+            DisplayText = if ($_.sn -and $_.givenName) {
+                "$($_.sn), $($_.givenName) ($($_.cn))"
+            } else {
+                $_.cn
+            }
+        }
+    }
+
+function Generate-SignaturesForUsers($selectedUsers) {
+    foreach ($item in $selectedUsers) {
+        $user = $item.ADUser
+        $cn            = $user.cn
+        $givenName     = $user.givenName
+        $sn            = $user.sn
+        $originalPhone = $user.telephoneNumber
+        $originalEmail = $user.mail
+        $plainPhone    = if (![string]::IsNullOrEmpty($originalPhone)) {
+                            $originalPhone -replace '^0+', ''
+                         } else { "" }
+        $convertedPhone = ConvertPhoneForHtml($originalPhone)
+        $convertedEmail = ConvertEmailForHtml($originalEmail)
+        $jobTitle       = $user.title
+        $department     = $user.department
+
+        Write-HostIfDebug "-----------------------------------"
+        Write-HostIfDebug "CN            : $cn"
+        Write-HostIfDebug "Vorname       : $($givenName)"
+        Write-HostIfDebug "Nachname      : $($sn)"
+        Write-HostIfDebug "Telefon (orig): $($originalPhone)"
+        Write-HostIfDebug "Telefon (HTML): $($convertedPhone)"
+        Write-HostIfDebug "plain_phone   : $($plainPhone)"
+        Write-HostIfDebug "E-Mail (orig) : $($originalEmail)"
+        Write-HostIfDebug "E-Mail (HTML) : $($convertedEmail)"
+        Write-HostIfDebug "Job (Title)   : $($jobTitle)"
+        Write-HostIfDebug "Abteilung     : $($department)"
+
+        # 1) HTML
+        $templateFilePath = Join-Path $PSScriptRoot 'template.html'
+        if (!(Test-Path $templateFilePath)) {
+            Write-HostIfDebug "Vorlage 'template.html' wurde nicht gefunden, bitte prüfe den Pfad." -ForegroundColor Red
+            return
+        }
+
+        $signatureHtml = Get-Content -Path $templateFilePath -Raw
+
+        if ([string]::IsNullOrEmpty($jobTitle)) {
+            $searchString   = '<div style="font-size: 14px; color: #ffffff;">[JOB] | [DEPARTMENT]</div>'
+            $pattern        = [Regex]::Escape($searchString)
+            $replacement    = '<div style="font-size: 14px; color: #ffffff;">[DEPARTMENT]</div>'
+            $signatureHtml  = $signatureHtml -replace $pattern, $replacement
+        }
+
+        # E-Mail
+        if ($originalEmail) {
+            $pattern      = 'href="mailto:\[EMAIL\]"'
+            $replacement  = 'href="mailto:' + $originalEmail + '"'
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+
+            $pattern      = '\[EMAIL\]'
+            $replacement  = $convertedEmail
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+        } else {
+            $pattern      = 'href="mailto:\[EMAIL\]"'
+            $replacement  = 'href="mailto:"'
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+
+            $pattern      = '\[EMAIL\]'
+            $replacement  = ''
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+        }
+
+        # Phone
+        if ($plainPhone) {
+            $pattern      = 'href="tel:\+49\[PLAIN_PHONE\]"'
+            $replacement  = 'href="tel:+49' + $plainPhone + '"'
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+
+            $pattern      = '\[PHONE\]'
+            $replacement  = $convertedPhone
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+        } else {
+            $pattern      = 'href="tel:\+49\[PHONE\]"'
+            $replacement  = 'href="tel:"'
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+
+            $pattern      = '\[PHONE\]'
+            $replacement  = ''
+            $signatureHtml = $signatureHtml -replace $pattern, $replacement
+        }
+
+        # Weitere Platzhalter
+        $signatureHtml = $signatureHtml -replace '\[VORNAME\]', $givenName
+        $signatureHtml = $signatureHtml -replace '\[NACHNAME\]', $sn
+        $signatureHtml = $signatureHtml -replace '\[JOB\]', $jobTitle
+        $signatureHtml = $signatureHtml -replace '\[DEPARTMENT\]', $department
+        $signatureHtml = $signatureHtml -replace '\[PLAIN_PHONE\]', $plainPhone
+
+        $filename    = "${cn}.htm"
+        $outputPath  = Join-Path $signaturePath $filename
+        Set-Content -Path $outputPath -Value $signatureHtml -Encoding UTF8
+        Write-HostIfDebug "Signatur (HTML) für '$($cn)' unter: $outputPath erstellt." -ForegroundColor Green
+
+        # 2) TXT (wenn vorhanden)
+        $templateTxtFilePath = Join-Path $PSScriptRoot 'template.txt'
+        if (Test-Path $templateTxtFilePath) {
+            $signatureTxt = Get-Content -Path $templateTxtFilePath -Raw
+
+            if ([string]::IsNullOrEmpty($jobTitle)) {
+                $searchString  = '[JOB] | [DEPARTMENT]'
+                $pattern       = [Regex]::Escape($searchString)
+                $replacement   = '[DEPARTMENT]'
+                $signatureTxt  = $signatureTxt -replace $pattern, $replacement
+            }
+
+            if ($originalEmail) {
+                $signatureTxt  = $signatureTxt -replace '\[EMAIL\]', $originalEmail
+            } else {
+                $signatureTxt  = $signatureTxt -replace '\[EMAIL\]', ''
+            }
+
+            if ($originalPhone) {
+                $signatureTxt  = $signatureTxt -replace '\[PHONE\]', $originalPhone
+            } else {
+                $signatureTxt  = $signatureTxt -replace '\[PHONE\]', ''
+            }
+
+            if ($plainPhone) {
+                $signatureTxt  = $signatureTxt -replace '\[PLAIN_PHONE\]', $plainPhone
+            } else {
+                $signatureTxt  = $signatureTxt -replace '\[PLAIN_PHONE\]', ''
+            }
+
+            $signatureTxt = $signatureTxt -replace '\[VORNAME\]', $givenName
+            $signatureTxt = $signatureTxt -replace '\[NACHNAME\]', $sn
+            $signatureTxt = $signatureTxt -replace '\[JOB\]', $jobTitle
+            $signatureTxt = $signatureTxt -replace '\[DEPARTMENT\]', $department
+
+            $txtFilename   = "${cn}.txt"
+            $txtOutputPath = Join-Path $signaturePath $txtFilename
+            Set-Content -Path $txtOutputPath -Value $signatureTxt -Encoding UTF8
+            Write-HostIfDebug "Signatur (TXT) für '$($cn)' unter: $txtOutputPath erstellt." -ForegroundColor Green
+        }
+
+        # 3) RTF (wenn vorhanden)
+        $templateRtfFilePath = Join-Path $PSScriptRoot 'template.rtf'
+        if (Test-Path $templateRtfFilePath) {
+            $signatureRtf = Get-Content -Path $templateRtfFilePath -Raw
+
+            if ([string]::IsNullOrEmpty($jobTitle)) {
+                $searchString   = '[JOB] | [DEPARTMENT]'
+                $pattern        = [Regex]::Escape($searchString)
+                $replacement    = '[DEPARTMENT]'
+                $signatureRtf   = $signatureRtf -replace $pattern, $replacement
+            }
+
+            if ($originalEmail) {
+                $signatureRtf   = $signatureRtf -replace '\[EMAIL\]', $originalEmail
+            } else {
+                $signatureRtf   = $signatureRtf -replace '\[EMAIL\]', ''
+            }
+
+            if ($originalPhone) {
+                $signatureRtf   = $signatureRtf -replace '\[PHONE\]', $originalPhone
+            } else {
+                $signatureRtf   = $signatureRtf -replace '\[PHONE\]', ''
+            }
+
+            if ($plainPhone) {
+                $signatureRtf   = $signatureRtf -replace '\[PLAIN_PHONE\]', $plainPhone
+            } else {
+                $signatureRtf   = $signatureRtf -replace '\[PLAIN_PHONE\]', ''
+            }
+
+            $signatureRtf = $signatureRtf -replace '\[VORNAME\]', $givenName
+            $signatureRtf = $signatureRtf -replace '\[NACHNAME\]', $sn
+            $signatureRtf = $signatureRtf -replace '\[JOB\]', $jobTitle
+            $signatureRtf = $signatureRtf -replace '\[DEPARTMENT\]', $department
+
+            $rtfFilename   = "${cn}.rtf"
+            $rtfOutputPath = Join-Path $signaturePath $rtfFilename
+            Set-Content -Path $rtfOutputPath -Value $signatureRtf -Encoding Default
+
+            Write-HostIfDebug "Signatur (RTF) für '$($cn)' unter: $rtfOutputPath erstellt." -ForegroundColor Green
+        }
+        Write-HostIfDebug "-----------------------------------"
+    }
+    Write-HostIfDebug "Fertig! Signaturen wurden erstellt."
+}
+
+###############################################################################
+# 2) WPF-UI + DRAG MOVE
+###############################################################################
+Add-Type -AssemblyName PresentationCore,PresentationFramework
+
+$XAML = @"
+<Window
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    Title="E-Mail Signaturen"
+    WindowStyle="None"
+    ResizeMode="NoResize"
+    Background="#262626">
+
+    <Window.Resources>
+        
+        <!-- Keine Hover-Effekte, nur normal/pressed für den X-Button -->
+        <Style x:Key="CloseButtonStyle" TargetType="Button">
+            <Setter Property="OverridesDefaultStyle" Value="True"/>
+            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
+            <Setter Property="Foreground" Value="#FFFFFF"/>
+            <Setter Property="Background" Value="Transparent"/>
+            <Setter Property="BorderBrush" Value="Transparent"/>
+            <Setter Property="FontWeight" Value="Bold"/>
+            <Setter Property="FontSize" Value="16"/>
+            <Setter Property="Width" Value="30"/>
+            <Setter Property="Height" Value="30"/>
+            <Setter Property="Padding" Value="0"/>
+            <Setter Property="Cursor" Value="Hand"/>
+            <!-- Wir definieren ein Custom Template, ohne Hover-Trigger -->
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <Border x:Name="border"
+                                Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}">
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <!-- Nur Pressed-Trigger (optional) -->
+                            <Trigger Property="IsPressed" Value="True">
+                                <Setter TargetName="border" Property="Background" Value="#444444"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- Ab hier definieren wir ein eigenes ControlTemplate für OK/Abbrechen-Buttons -->
+        <Style x:Key="FancyButtonStyle" TargetType="Button" BasedOn="{x:Null}">
+            <!-- Wichtig: eigene Vorlage, damit wir Windows-Standard nicht haben -->
+            <Setter Property="OverridesDefaultStyle" Value="True"/>
+            <Setter Property="FocusVisualStyle" Value="{x:Null}"/>
+            
+            <!-- Normal-Attribute -->
+            <Setter Property="Foreground" Value="#FFFFFF"/>
+            <Setter Property="Background" Value="#3A3A3A"/>
+            <Setter Property="BorderBrush" Value="#555555"/>
+            <Setter Property="BorderThickness" Value="1"/>
+            <Setter Property="FontWeight" Value="Bold"/>
+            <Setter Property="FontSize" Value="12"/>
+            <Setter Property="Margin" Value="5,0,5,0"/>
+            <Setter Property="Padding" Value="6,3,6,3"/>
+            <Setter Property="Cursor" Value="Hand"/>
+
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="Button">
+                        <!-- Rahmen in Form einer Border -->
+                        <Border x:Name="border"
+                                Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}">
+                            <!-- Hier liegt der eigentliche Button-Inhalt -->
+                            <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center"/>
+                        </Border>
+                        <ControlTemplate.Triggers>
+                            <!-- Hover: Hintergrund #FDC100, Schrift #000000 -->
+                            <Trigger Property="IsMouseOver" Value="True">
+                                <Setter TargetName="border" Property="Background" Value="#FDC100"/>
+                                <Setter Property="Foreground" Value="#000000"/>
+                            </Trigger>
+                            <!-- Pressed: Hintergrund #C77E00, Schrift #FFFFFF -->
+                            <Trigger Property="IsPressed" Value="True">
+                                <Setter TargetName="border" Property="Background" Value="#C77E00"/>
+                                <Setter Property="Foreground" Value="#FFFFFF"/>
+                            </Trigger>
+                            <!-- Deaktiviert -->
+                            <Trigger Property="IsEnabled" Value="False">
+                                <Setter TargetName="border" Property="Background" Value="#707070"/>
+                                <Setter Property="Foreground" Value="#AAAAAA"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- RadioButton-Style --> 
+        <Style TargetType="RadioButton">
+            <Setter Property="Foreground" Value="#FFFFFF"/>
+            <Setter Property="Template">
+                <Setter.Value>
+                    <ControlTemplate TargetType="RadioButton">
+                        <StackPanel Orientation="Horizontal" Margin="0,5,0,5">
+                            <Border Width="16" Height="16" 
+                                    BorderBrush="#3F3F3E" 
+                                    BorderThickness="2" 
+                                    CornerRadius="8" Margin="0,0,5,0">
+                                <Ellipse x:Name="EllipseFill" Fill="Transparent"/>
+                            </Border>
+                            <ContentPresenter/>
+                        </StackPanel>
+                        <ControlTemplate.Triggers>
+                            <Trigger Property="IsChecked" Value="True">
+                                <Setter TargetName="EllipseFill" Property="Fill" Value="#FDC100"/>
+                            </Trigger>
+                            <Trigger Property="IsEnabled" Value="False">
+                                <Setter TargetName="EllipseFill" Property="Fill" Value="Gray"/>
+                                <Setter Property="Foreground" Value="Gray"/>
+                            </Trigger>
+                        </ControlTemplate.Triggers>
+                    </ControlTemplate>
+                </Setter.Value>
+            </Setter>
+        </Style>
+
+        <!-- ListView-Style: dunkel, bei deaktiviert -> Schrift grau -->
+        <Style TargetType="ListView" x:Key="UserListStyle">
+            <Setter Property="Background" Value="#2F2F2E"/>
+            <Setter Property="Foreground" Value="#FFFFFF"/>
+            <Style.Triggers>
+                <Trigger Property="IsEnabled" Value="False">
+                    <Setter Property="Foreground" Value="Gray"/>
+                    <Setter Property="Background" Value="#2F2F2E"/>
+                </Trigger>
+            </Style.Triggers>
+        </Style>
+
+        <!-- ListViewItem-Style -->
+        <Style TargetType="ListViewItem" x:Key="ItemStyle">
+            <Setter Property="Background" Value="#2F2F2E"/>
+            <Setter Property="Foreground" Value="#FFFFFF"/>
+            <Setter Property="HorizontalContentAlignment" Value="Stretch"/>
+            <Style.Triggers>
+                <Trigger Property="IsMouseOver" Value="True">
+                    <Setter Property="Background" Value="#3A3A3A"/>
+                </Trigger>
+                <DataTrigger Binding="{Binding IsEnabled, 
+                    RelativeSource={RelativeSource AncestorType=ListView}}" Value="False">
+                    <Setter Property="Foreground" Value="Gray"/>
+                    <Setter Property="Background" Value="#2F2F2E"/>
+                </DataTrigger>
+            </Style.Triggers>
+        </Style>
+
+        <!-- ScrollViewer-Style: kein Weiß -->
+        <Style TargetType="ScrollViewer">
+            <Setter Property="Background" Value="#2F2F2E"/>
+        </Style>
+    </Window.Resources>
+
+    <Grid x:Name="RootGrid">
+        <Grid.RowDefinitions>
+            <RowDefinition Height="Auto"/> <!-- Eigener Titelbalken -->
+            <RowDefinition Height="Auto"/> <!-- Überschrift + Radiobuttons -->
+            <RowDefinition Height="Auto"/> <!-- ListView -->
+            <RowDefinition Height="Auto"/> <!-- Buttons -->
+        </Grid.RowDefinitions>
+
+        <!-- Titelbalken (mit "X" rechts) -->
+        <Grid Grid.Row="0" x:Name="TitleBar" Background="#444444">
+            <Grid.ColumnDefinitions>
+                <ColumnDefinition/>
+                <ColumnDefinition Width="Auto"/>
+            </Grid.ColumnDefinitions>
+            <!-- Titel hier -->
+            <TextBlock Text="E-Mail Signaturen" 
+                       Foreground="#FFFFFF" 
+                       VerticalAlignment="Center" 
+                       Margin="10,0,0,0"/>
+            <Button x:Name="btnClose" Grid.Column="1"
+                    Style="{StaticResource CloseButtonStyle}"
+                    Content="✕"
+                    HorizontalAlignment="Right"
+                    Margin="0,0,10,0"/>
+        </Grid>
+
+        <!-- Überschrift + Radiobuttons -->
+        <StackPanel Orientation="Vertical" Grid.Row="1" Margin="10">
+            <TextBlock Text="Signaturen erstellen für ..." 
+                       Foreground="#FFFFFF" 
+                       FontWeight="Bold" 
+                       FontSize="16" 
+                       Margin="0,0,0,10"/>
+            <RadioButton x:Name="rbAlle" Content="alle Mitarbeiter" />
+            <RadioButton x:Name="rbAuswahl" Content="den ausgewählten Mitarbeiter" />
+        </StackPanel>
+
+        <!-- Liste mit Nutzern (max 300px hoch, scrollt bei Bedarf) -->
+        <ListView x:Name="lvUsers" Style="{StaticResource UserListStyle}" 
+                  ItemContainerStyle="{StaticResource ItemStyle}"
+                  Grid.Row="2" Margin="10" MaxHeight="300">
+            <ListView.ItemTemplate>
+                <DataTemplate>
+                    <StackPanel Orientation="Horizontal">
+                        <CheckBox IsChecked="{Binding Selected}" Margin="5,0,5,0"/>
+                        <TextBlock Text="{Binding DisplayText}" VerticalAlignment="Center"/>
+                    </StackPanel>
+                </DataTemplate>
+            </ListView.ItemTemplate>
+        </ListView>
+
+        <!-- Buttons OK / Abbrechen -->
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Grid.Row="3" Margin="10">
+            <Button x:Name="btnOK" Style="{StaticResource FancyButtonStyle}" Content="OK" Width="80" Margin="0,0,10,0"/>
+            <Button x:Name="btnCancel" Style="{StaticResource FancyButtonStyle}" Content="Abbrechen" Width="80"/>
+        </StackPanel>
+    </Grid>
+</Window>
+"@
+
+[xml]$xml = $XAML
+$reader = New-Object System.Xml.XmlNodeReader $xml
+$Window = [Windows.Markup.XamlReader]::Load($reader)
+
+# Fenster-Einstellungen
+$Window.Width = 400
+$Window.SizeToContent = 'Height'
+$Window.WindowStartupLocation = 'CenterScreen'
+$Window.MaxHeight = [System.Windows.SystemParameters]::PrimaryScreenHeight * 0.8
+
+# Elemente holen
+$TitleBar   = $Window.FindName('TitleBar')
+$btnClose   = $Window.FindName('btnClose')
+$rbAlle     = $Window.FindName('rbAlle')
+$rbAuswahl  = $Window.FindName('rbAuswahl')
+$lvUsers    = $Window.FindName('lvUsers')
+$btnOK      = $Window.FindName('btnOK')
+$btnCancel  = $Window.FindName('btnCancel')
+
+# Beim Start: "alle Mitarbeiter" -> Liste grau
+$rbAlle.IsChecked = $true
+$lvUsers.IsEnabled = $false
+
+$rbAlle.Add_Checked({
+    $lvUsers.IsEnabled = $false
+})
+$rbAuswahl.Add_Checked({
+    $lvUsers.IsEnabled = $true
+})
+
+# Datenquelle
+$lvUsers.ItemsSource = $global:AllUsers
+
+# Funktion zur Aktualisierung der RadioButton-Beschriftung
+function UpdateRbAuswahlContent {
+    $count = ($global:AllUsers | Where-Object { $_.Selected -eq $true }).Count
+    if ($count -ge 2) {
+        $rbAuswahl.Content = "die ausgewählten Mitarbeiter"
+    }
+    else {
+        $rbAuswahl.Content = "den ausgewählten Mitarbeiter"
+    }
+}
+
+# Event-Handler für Check/Uncheck in der Liste
+$lvUsers.AddHandler(
+    [System.Windows.Controls.Primitives.ButtonBase]::ClickEvent,
+    [System.Windows.RoutedEventHandler]{
+        UpdateRbAuswahlContent
+    },
+    $true
+)
+
+# Titelbalken "Drag" (Fenster verschieben)
+$TitleBar.Add_MouseLeftButtonDown({
+    if ($_.LeftButton -eq [System.Windows.Input.MouseButtonState]::Pressed) {
+        try {
+            $Window.DragMove()
+        } catch {}
+    }
+})
+
+# "X"-Button oben rechts
+$btnClose.Add_Click({
+    $Script:SelectedUsers = $null
+    $Window.Close()
+})
+
+# OK-/Abbrechen-Logik
+$Script:SelectedUsers = $null
+$btnOK.Add_Click({
+    if ($rbAlle.IsChecked -eq $true) {
+        $Script:SelectedUsers = $global:AllUsers
+    } else {
+        $Script:SelectedUsers = $global:AllUsers | Where-Object { $_.Selected -eq $true }
+    }
+    $Window.Close()
+})
+$btnCancel.Add_Click({
+    $Script:SelectedUsers = $null
+    $Window.Close()
+})
+
+# UI anzeigen
+$null = $Window.ShowDialog()
+
+# Falls abgebrochen oder geschlossen
+if (-not $Script:SelectedUsers) {
+    Write-HostIfDebug "Abgebrochen. Keine Signaturen erzeugt."
+    return
+}
+
+# Signaturen erstellen
+Generate-SignaturesForUsers -selectedUsers $Script:SelectedUsers
+```
\ No newline at end of file