Everyone needs time in the front. Think of the front as the space where they're allowed to not only interact with the outside world, but also move forward beyond their current memories which is especially important for trauma. Besides, not letting your alters out front is kind of like not letting your roommates out of the apartment.

I try to make them comfortable in my apartment so when I need them they'll come out more. They have drawers with their favorite things. Gummies for Caitlyn, puzzles for Chelsea, magazines for Natasha

it can be difficult, but you need to ket yourself take a step back so they can figure themselves out. let them try foods, activities, clothes :>

Learn about them the best you can! I would start off with them making a Pinterest board or a Spotify playlist for themselves. F.e. I have a Jinx fictive and going off their Pinterest board, I know they like neon signs, sour candy, and prefers comfy clothes