2nd Player Can't Possess?

When I launch my multiplayer fps game everything works as suspected, but for the life of me, I cannot figure out how to make a 2nd player possess a pawn/character. When the player selects a plane for example, the plane spawns but the character does not possess it, but the first player can. Other than the basics, i’m not that familiar with a lot of ue4. Help would be very appreciated!