While playing competitive overwatch 2, how to change roles
No.
Some more characters
If by system switching you mean from console to pc, then no.
If it’s from pc to pc then it might be possible. If you take longer than the minute to get in though, your team has likely all left and the match been cancelled.
(This will likely not prevent a leaver penalty)
If I’m understanding this question correctly, you’re unable to change roles during a game. Pick the roles you’d like to play before queueing up since you will be locked in that position until the game concludes.
As pachimari said, you choose the role you want to play before you queue.
If you want more freedom during the match, go open queue.
In open queue you’re free to swap between all roles during the match.