Add User Role WordPress plugin you can change user role (except Administrator) capabilities easy, with a few clicks.
The global options can be customized via wordpress admin.
Add new roles and customize its capabilities according to your needs, from scratch of as a copy of other existing role.
Unnecessary self-made role can be deleted if there are no users whom such role is assigned.
Role assigned every new created user by default may be changed too.
Capabilities could be assigned on per user basis. Multiple roles could be assigned to user simultaneously.
You can add new capabilities and remove unnecessary capabilities which could be left from uninstalled plugins.
Multi-site support is provided.
Upgrade Add User Role is easy, just replace plugin file (userrole.php) in plugin directory with new version. No need to re-config any options in “User Role” option tab.