I'm new in using RVSiteBuilder. I tried to create a guest user from the User Manager page (rvsindex.php), but there are only two user_roles, either root or member. These users can edit any other users' blogs. Then I tried to change the role_id from 2 (member) to 0 (guest). Now its role shows up as guest, but when I use the new user to login, I still can edit any other people's blogs. My question is: how do I create a user that can do the following:

1. Create new blogs
2. Reply to other people's blogs
3. Can not edit/delete other people's blogs

Any help is appreciated.