title: Creating 2vs2 room with friends in Unity with PUN
body: <p>I would like to create a game mode 2vs2 with our friends. I have no idea where to start off. How can we send them notification regarding some of our friends is looking for party. I think this is probably we would have to take care of through push notification from our server and then once other player joins the room how can we create room properties so that both of us remain in the same team. Do we need to create a private room in that case or what ?</p>