I'm trying to set up an event, map, or part of the game in general where I don't want two people to be able to enter. Is there a way to do this? Global events, maybe? For example, let's say there's an NPC (event) you talk to, and a training room you can enter from there. Is there a way I can have it so that the NPC will not accept any other players as long as that one player is busy doing the training room, and only opens up once they leave? I've got a basic handle of how the event system works, so I'd like any suggestions one might have.