Couple of quick admin screenshots.
In the second screenshot you will see several categories listed at the bottom. After you upload a models content and text you can choose 1 or 100 categories that they belong in. These categories have their own page that displays all models that you have selected. For instance, if you take one girl and check off amateur, teen, blonde, short, and skinny under her profile she will show up on those category pages. You can display or not display any categories you want.
There is a ton I missed, as I said I will have detailed info sometime tomorrow.