There's a tab called ZARP VIP in top right, but incase you are too lazy:
zarpgaming.com/index.php/zarp-vip
Scroll down to the bottom, it should give an option to connect your steam account. Once linked, turn off GMOD, and start it back up, obviously you won't need to turn it off if it's not even on.

There's a tab called ZARP VIP in top right, but incase you are too lazy: http://zarpgaming.com/index.php/zarp-vip Scroll down to the bottom, it should give an option to connect your steam account. Once linked, turn off GMOD, and start it back up, obviously you won't need to turn it off if it's not even on.