What I was trying to do was set user groups that could only post under certain categories, but to where all could still see them, but either that not an option or I cant figure how it works, if its not a opttion then I have no clue what these two setting links do.
I setup a test user and user group to test prefixes and do not see a way to make them act any different other then color tags. Didnt seem to change anything.
The help menu at XF does not cover the above options or even mentions them, so I have no idea how to manipulate them. If some one could give a break down it would be appreciated.