magento customization

i have setup in magento a custom module that allows users to be part of multiple groups and the ability to hide/show catalogs based on the user group, i need someone to create a module taht will hide/show specific options to products in a category based not only on the group but the user as well. example user x is member of group 2 and can see product y with a,b, and c options user z is also a member of group 2 and can see product y but can only see options c,d, and e all products are customizable and have attribute sets for that which are constant among all users