Sudo code as an example of creating agents for each computer and remotely installing.

VeeamPN-AD-Computers.ps1

Import-Module VeeamPN
$Computers = Get-ADComputer -Filter * -Properties * 
$Workstations = $Computers | Where-Object {$_.LastLogonDate -gt (Get-Date).AddDays(-30) -and $_.OperatingSystem -notlike "*server*"}
Connect-VeeamPN @ConnectionInfo 
foreach($Computer in $Workstations){
    $Result = New-VeeamPNClient -ClientName $Computer.Name
    $ConfigPath = Get-VeeamPNClientConfig -ID $Result.id -OutputPath $ConfigDirectory
    Update-VeeamPNConfig -Config $ConfigPath -Routes $Routes -DNS $DNS
    $ScriptBlock = {
        Install-Module VeeamPN
        Import-Module VeeamPN
        Invoke-RestMethod "$using:URL/$($using:Computer.Name).ovpn" -OutFile $using:ConfigPath
        Install-OpenVPN -ConfigPath $using:ConfigPath
    }
    Invoke-Command -ComputerName $Computer.Name -ScriptBlock $ScriptBlock
}