Thank you all. Is good to see, that my plugin helps others WordPress user too.
@cpein thanks for the tags suggestions.
The Roles section allows you to restrict the access for the WordPress Roles.
Editor have nearly Administrator Rights. There can see and edit every Category, Pages, Posts. In our Example we don't wanna that our Editors see Category A.
With the Roles section we are be able to restrict them. Just disabled the Category A checkbox.
Btw. if we just wanna restrict only one Editor, just go the Users Area. Choose the user to edit. Scroll down and there we go, we can restrict this User. It won't affect the other Editors.
I know the documentation of my plugin is at the moment poor. But i gonna change this soon.
I will try to put in your suggestion restriction link for non-member in the next version of CaPa, thanks for the idea. :)
@krisknap - thanks for your review :)