This allows you to enable Remote Desktop remotely and add a Domain User to the Remote Desktop Users local group.
'Make sure to replace"<domainname>/"with your Domain name.
Const ENABLE_CONNECTIONS = 1
Dim PCName, UsrName
strComputer = InputBox("Enter computer name:",PCName)
strUser = InputBox("Type username:",UsrName)
Set objWMIService = GetObject("winmgmts:"_
&"{impersonationLevel=impersonate}\"& strComputer &"rootcimv2")
Set colItems = objWMIService.ExecQuery _
("Select * from Win32_TerminalServiceSetting")
For Each objItem in colItems
errResult = objItem.SetAllowTSConnections(ENABLE_CONNECTIONS)
Next
Set objGroup = GetObject("WinNT://"& strComputer &"/Remote Desktop Users")
Set objUser = GetObject("WinNT://<domainname>/"& strUser)
objGroup.Add(objUser.ADsPath)
For Each objUser in objGroup.Members
If objUser.Name = strUser Then
Wscript.Echo strUser &" has RDP Access to computer."
End If
Next