Im folliwng this guide when I wrote the code up to the point where I join a game, then I realized I have to first script a way to have the game server register itself using PlayFabServerAPI.RegisterGame(). When you register a game you set a "GameMode" in the RegisterGameRequest but when I was doing matchmaking I was using a "QueueName" in the MatchMakingTicketRequest. It says in the docs here that "this must be defined in the Game Modes tab in the PlayFab Game Manager, along with the Build ID (the same Game Mode can be defined for multiple Build IDs).". But I don't see a GameModes tab in the PlayFab Game Manager. There is a Queue tab, but the Queue tab doesn't require a Build ID like the docs say a GameMode requires. What do I put in the GameMode section on the RegisterGame api call and how does it relate to the Queue?