Below are user role management system which defines what a specific user can and cannot do in WordPress site.

1. Subscriber
2. Contributor
3. Author
4. Editor
5. Administrator

Here's user role in details...

1. Subscriber

• Can only edit/manage his profile

2. Contributor

• Can write new post, but cannot publish (admin need to approved post)
• Cannot delete post (his or others)
• Did not have Media access (Cannot upload or view images)
• Can only view comment list
• Can edit/manage his profile

3. Author

• Can write & publish new post
• Can edit or delete his post, but not others
• Have Media access (can upload or delete images)
• Can only view comment list
• Can edit/manage his profile

4. Editor

• Can write & publish new post
• Can edit or delete any post
• Have Media access (can upload or delete images)
• Can create, edit or delete Categories
• Can create, edit or delete Pages
• Can manage comments (Unapprove, Reply, Quick Edit, Edit, Spam, Trash)
• Can edit/manage his profile

5. Admin

• Has access to all the administration features within the site