How do change Ark Player spawns and Change Map when pressing M

I’ve been looking for tutorials and guides for this but i cant find anything so i decided to come on here. On the Ark Dev kit how do you customize player spawns instead of having the islands “East1” and everything like that. Also how do i change the Map when i press M? im not sure if this is where i ask stuff about ark so sorry but im really confused and have been looking for a while and cant seem to find anything