The Studio Manager Platform allows to create multiple profiles and separate media libraries in case you want the model to have access to their profiles and do some editting by themselves or appoint a manager between you and the model.
We implemented this because some studios have intermediary staff to manage their models and also because it keeps the images of each models separated from one media gallery to another, otherwise you could end up with a lot of content to administrate in one place.
Additionally some freelancers resell the service so they can easily design bio profiles and deliver them to the models without compromising their client base.
Finally since each model accounts come with a subdomain you can promote them separately in the directory and/or take advantage of the hosted pages to highlight extra products or services.