Single Player in Multiplayer (Read for details)?

Ok ok, so I know I'm not supposed to ask a "how to" question on here, but this one is kind of serious, because I desperately need to figure out how to do this. I'm making an RPG-style game, and the intro to the game needs to be single player only (as a tutorial). The tutorial would give you a weapon, spawn a few enemies, and let you kill them. However, I need this only to client side. Instead of me trying to explain it and making it 100% more confusing, i'll use an example from another game. In the ROBLOX game "Tiny Tanks", when your first play, it puts you in a small area where only you are (noone else), and it teaches you the controls, then spawns an enemy for you to kill. Once this is over, it connects you with the entire server, and you can play with other people. I need to figure out how to make an event like that happen.

Anyone know how? Like I said, I know I'm not supposed to ask "how to" questions, but I'm desperate.

All help is appreciated.

what i think your trying to say is a teleportation script.Well first make a place with the tutorial and only 1 player, and the whole tutorial then once it finishes it takes you to a different server with the whole lobby.