How do I use save place api?

So I've created a place on the game explorer in studio. I have my main game, then a second place. How can I publish a game to this and teleport a player to it? Something like how Egg Hunt 2018 worked, as you had teleport and you can go into them and it will take you to the certain game. On the webpage, it says something about save place api and stuff so I'm not sure.