Darkgon01

Hey, so I was using CBBE for a joking kinda Fallout 4 run I was gonna stream with my friends, but the features on my character are also stuck to the NPCs. I was wondering if there was a possible way to have it so that the CBBE modifications only apply to the player model. And while I'm asking, does anyone know if there's a mod for this that allows multiple heads on one character?

Everytime I try to open it for Skyrim Special edition, it simply says it can't get the permission for the directory, how do I fix?