The names of the Course Roles that are used to define privileges within a Course can be changed to suit the institution. It is important to note that even if the name of role is changed the privileges for the role do not change. Changing the role “Grader” to “Content Manager” will not change what users with that role can access.
To modify the privileges associated with each role use the User Privilegesfeature.

Follow these steps to open the Course Rename page.
Step 1 Click Settings from the Courses section of the System Control Panel.
Step 2 Click Course Role Rename from the Settings page.
For each role name, the default name is listed below the name as it appears in the system. To change the name of the role simply edit the name as it appears in the Role Name: field.
To change all the names back to their default values click the Check here to revert all fields to default names check box and then click Submit.