What do you mean by a "category box"? Are you referring to a category on your menu, on the forum, or on the schedule? If you could answer that, that would help me to troubleshoot the issue.
Under Menu Administration, if you click add New Menu Category a box pops up to name and if you want add your own information at the bottom. We had one that we used to list Guild Officers for anyone to see. I went to edit it and it wouldn't let me even though I've had security access to do this. Under the actual Guild Masters Account which I have access to it works just fine but under my Account - Auronani - it does not. I made sure all my security settings were still right and they are. Even under my account on the page it is checked for me to have full administrative privilages. every time i go to change a catergory or add a new one it won't let me.