In Gmod and (formerly) Unturned the only way to disable friendly fire with your teammates was to join their Steam group. I used to get a lot of invites to random groups that I would accept solely for this purpose. The invites were literally a tiny box that would pop up at the bottom of your screen with a Yes/No option. One of the groups was built around a curated list of games with flat chested girls in them and it was pretty obvious I wasn't aware of this given that I didn't own any of these games. Obviously I'm not a fan of "Gay Boy's Nico Appriciation" either lmao
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