Joomla! 1.0.8 Stable

First, many thanks for creating and supporting RSGallery2 - it\'s most appreciated.

I\'m having some probs with user management.

1. Category management
I don\'t want users to create top-level categories, so I have create twod: (i) system and (ii) members. Is there any way I can restrict members to creating their albums in the second?

2. Creating a new category/album
As a test user, my first attempts at creating a new \'category\' were rejected. Tried this 3x.
Only after switching config between allowing 1 category per user, to two, was I able to create a new category.

3. Upload
The uploaded image \'disappeared\'. I uploaded and got the image name, but no image.

Your advice welcome
_____________________________________
Later:
OK, found a partial answer to (3) - pic won\'t upload with a description. Must upload \'blank\' then edit after.
This relates the the upload prob in admin: it ignores title and description, which have to be added after, with an edit.