So I'm playing on PC and I picked up the vanguard bounties but I can't do them because my teammates keep killing the enemies. My question is, how can I go on missions alone, so that I can do them, because even if I put everything in the "locked" state in the social menu, it keeps throwing people next to me. I thought that if I turn off the Crosplay function, this is possible, where should I turn this off on the PC?