Third Party Mirror Multiplayer Anytime Join

I am trying to develop a virtual classroom using mirror multiplayer and I can't seem to get unity to work in a way that would let the client choose user details in the lobby scene and then join an active room in a different scene. I just started using unity and I can't get working logic for this. It seems like unity is hard-coded to get all players ready before it can move them into the room scene. Is there a workaround available for this?