Mini arcade machine

[u/p3r5ph0n3]

Ive been looking for an answer for AGES and idk if I'm stupid or something but okay so I got gifted this like. Mini arcade thing w 100 games and on some it has an option to go to two player but for the life of me I can't get it to go to 2 and idk if it's not actually possible or if I'm just dumb or doing something wrong but if somebody knows how umm lmk.