Q:

Magento - Restrict some catogories for some customer groups

How can I hide/show some categories for some customers groups in Magento ? 
Thanks a lot.

A:

Here is what you need:
https://github.com/Vinai/groupscatalog2
Why roll your own!?!

A:

I had the Netzarbeiter Groups Catalog 2 extension just installed on a new Magento website and I can tell you this is possible.
Just go to the category you want to hide, and after the option 'Hide from Groups' you select the customer groups you want to hide this category for.

