Datapack for creating custom or random teams, for up to 100 players and up to 4 players per team. This uses triggers, so it can be used by non opped players. The menu interface is only displayed to players on gamemode creative. You can create a team and the other players will be able to see it and join it. It also has constraints and lets you create or join only one team. To join or create another team, you have to leave the one you are currently in.