Customization system won't work

Is this impossible to do in Unreal Engine4?

I’m trying to make a character select and customization system. I have 2 different player characters, but I need to game mode to get the character customization system to work.
Is it a way to make unreal engine 4 keep the game mode when I open a new level?
Or is it a way to make the game mode have more then 1 player blueprint?
Or do I need to make 1 character blueprint and deactivate 1 of the character and if I do, how do I deactivate 1 of them?