I have been looking everywhere and must not be asking the question right. I have inherited an RDS server which is used by THIN Clients only. I have a request of a user to be able to go to the start menu and click the "Lock" button. (right where the Logoff/Disconnect is). Now somewhere in Group Policy (as we are on a domain and RDS users have a policy in place) this is turned off so as not to allow it. When clicked it does nothing. I did find that in GP that User Config/Policies/Admin Template/Start Menu and Taskbar, they have Remove shutdown, restart, sleep, enabled. Which as it should be. But where is it that I change the Lock or "Lock This Computer". I know it is here somewhere, because I can RDP into the server (As my own administrator profile) and it locks just fine. Just like a Ctl Alt Del,,, but they cant to that as normal users on their thin clients. I am going a little insane. It should be easy, but cant find it anywhere.
Any help is much appreciated.