Markeplace customization

Dears,

What capabilities github can provide for the following case.
What if I need my dedicated category and subcategories as this supposed to be used only for one specific industry and I would like to control the access to this category of sw developers and buyers. It’s kind of white label use of github marketplace but for me is not critical to have it on my brand and etc., I just do not want messed up code develop by my community for my industry with all the rest code and Apps.
Thanks