I've really dug into Google and AskUbuntu this week, but I wasn't able to find a satisfactory answer to this issue I'm facing...
I've created a user with ADMIN permissions on my Ubuntu 18.04 using the available GUI from GNOME. Every time I access that interface, to be able to create a new user using that screen, I have first to click on UNLOCK button at the top of the screen, close to the X (close window) button. This procedure works very well when I'm logged onto console, locally.
But when I try to perform the exact same procedure when connected to my Ubuntu using a xRDP Session, I'm not able to click on that button. When I'm connected remotely, the UNLOCK button at the top of the screen is greyed out, and a message is displayed when I hover the cursor over the button: "System policy prevents changes."
What policy do I have to change on my Ubuntu installation in order to have the same behavior, at that screen, no matter if I'm logged at Console or remotely connected thru xRDP?