function Show-Menu
{
    param (
        [string]$Title = 'Network and Active Directory Setup'
    )
    Clear-Host
    Write-Host -BackgroundColor Gray -ForegroundColor Blue "================ $Title ================"
    
    Write-Host "1: Network Setup"
    Write-Host "2: Install AD Feature and Domain Services."
    Write-Host "3: Install AD Forest and DNS."
    Write-Host "4: Add Groups"
    Write-Host "5: Add Users"
    Write-Host "Q: Press 'Q' to quit."
}
do
 {
     Show-Menu
     $selection = Read-Host "Please make a selection"
     switch ($selection)
     {
         "1" {
             Write-Host -NoNewline "Enter Host IP:"  
             $IP = Read-Host 
             Write-Host -NoNewline "Enter Gateway IP:"
             $gateway = Read-Host
             New-NetIPAddress -IPAddress $IP -InterfaceAlias Ethernet0 -DefaultGateway $gateway -Confirm:$false
             #Set-NetIPAddress -IPAddress $IP -InterfaceAlias Ethernet0 -PrefixLength 24 
         } 
         "2" {
             Add-WindowsFeature AD-Domain-Services -IncludeManagementTools
         } 
		 "3" {
             Write-Host -NoNewline "Enter Domainname:"
             $domainname = Read-Host
             Install-ADDSForest -DomainName $domainname -InstallDNS -NoRebootOnCompletion:$false
            } 
		 
        "4"{
             New-ADOrganizationalUnit -Name "Schulung" -ProtectedFromAccidentalDeletion $False
             New-ADOrganizationalUnit -Name "Groups" -Path "OU=Schulung,DC=isatho,DC=me" -ProtectedFromAccidentalDeletion $False
             New-ADOrganizationalUnit -Name "Users" -Path "OU=Schulung,DC=isatho,DC=me" -ProtectedFromAccidentalDeletion $False
             $groups = Import-Csv "C:\script\groups.csv" `
             #Loop through the CSV
                foreach ($group in $groups) {
                    $groupProps = @{
                                    Name          = $group.name
                                    Path          = $group.path
                                    GroupScope    = $group.scope
                                    GroupCategory = $group.category
                                    Description   = $group.description
                                     }#end groupProps
                 New-ADGroup @groupProps
    
                } #end foreach loop
            }

         "5" {
             Import-Csv "C:\script\user.csv" -Delimiter ";" | `
                ForEach-Object { 
                New-ADUser `
                            -Name $_.Name `
                            -GivenName $_.givenname `
                            -Surname $_.sn `
                            -Path $_.ParentOU `
                            -SamAccountName $_.samAccountName `
                            -UserPrincipalName ($_.samAccountName + "@" + $env:userdnsdomain) `
                            -AccountPassword (ConvertTo-SecureString "Start123!" -AsPlainText -Force) `
                            -EmailAddress $_."E-Mail Address" `
                            -Enabled $true `
                            -ChangePasswordAtLogon $true
                            } 
             }
            
         }
    }       
    until ($selection -eq "q")