Restrict xgui ConCommand

[Darkblizzard]

Hello,
I'm trying to restrict it so the concommand "xgui" or "ulx menu" doesn't open unless in a certain usergroup. I would use the Garry's Mod functions, but looking through the code each one begins with "xgui.". Is there a specific way to do this without having to damage the code?
Thanks!

[Megiddo]

You should be able to restrict access to the "xgui" command inside of XGUI, just like you do with the other ULX commands.