How can I possess a character properly?

So I need to be able to possess two different characters one at a time (not at the same time). Unreals Tutorial gave me this which doesn’t really work, whenever I press the proper keys (1 for StudentPC and 2 for SecondaryPC) it basically just locks me out, I can’t do anything, no movement, no nothin’.

I have both characters spawned in the map I’m using but I think it has to do with me spawning in as one of the characters (specifically StudentPC). I need to be able to jump between all the characters with full movement, changing of the cameras and full functionality of what’s inside each character. Any help would be fantastic thanks!