Default pawn cant be controlled

I’ve created pawn(c++ class => blueprint based on class), added new game mode, and assigned my pawn into default pawn. However when i start preview game, UE spawns another pawn at the position of preview camera, so i have 2 pawns on map, even though there is only 1 present in world outliner. What am i doing wrong?

Answering my own question - to auto posses my pawn in pawn blueprint in Auto Possess Player i had to select Player0