New Active Users – Level

It’s at the bottom of the readme.html:
On multi-user:
New users can register with wp-register.php. Then you (as an admin) click the “+” next to their name on the Team page in admin to upgrade their level to 1 or more, so they can post. If you don’t want an user to post anymore, just click “-” until their level is 0.
Note: you can now disable users registration altogether from the config file.
User Levels:
0 – new user: can’t post.
1 – user: can post & edit/delete their own posts.
3 & higher – admin: can post, edit/delete other people’s posts, and change the options.
Any user whose level is higher than 1, can edit/delete the posts and change the level of users whose level is inferior. Example: a level 2 user is not an admin, but can edit the posts of level 1 users, and up the level of a new user from 0 to 1.