Models-

Tsukishima... he'd be the most requested model

Kageyama... he'd be the model who would do all the shoots wearing business suits and stuff

Suga... does modeling for family outfits and stuff, because who wouldn't want his face on a magazine?

Photographers

Yamaguchi- he always takes pictures for Tsukishima

Ennoshita/Hinata- they more edit the pictures to add more pizzaz

Daichi would be the owner/ manager of the business

Yachi and Kiyoko would do costume design

I would definitely use this company, hands down.