Problem with the tab menu (players tab).

Hi there!
I have a darkrp server and i want to have the darkrp tab, but instead, i have the gmod 13 default one.
I know how to have the darkrp tab for me, but i want a command or something to the server for all players to see the darkrp tab, and not the default gmod 13 one.
Thanks, afonso003.