What's the best way to make a button that sends you and only you to a place within the main game?

In the game I'm making right now, there is a quick start feature, where you can solo in a place and have it lead you there instantly, but the problem is, I don't know what I would do so no one can join you if they quickstarted it, or if they tried to join you. I can't make a max player cap of 1 player, because multiplayer also exists, so I want to know a way to make I always create a new server when you start, and have it lead you to the sub-place within the main game. What's the best way to do this?

You should make two different places, one called multiplayer and one called solo, with the same game structure. Just copy the code from one game into the other. Just make sure to change the player limits :)

Best,

TheLastHabanero