How do you find your crew?

Crew members won't walk up to you you have to walk up to them. To get their response, walk up to them and click " greet" in the corner. Later, once your friendship increases, you can ask them to join the tribe and then you can switch sims with them. Crew mates are usually found on the Airplane Island,  ( 2nd island ) and they could be anywhere possibal on the island.