Module roles are a type of group. It is therefore recommended that you do not delete a module role. Instead, remove all members of the module role and leave the module role in the repository. You can also reassign the members of the module role to another module role.
To delete a module role:
Navigate to Administration > User Management > Module Roles to access the Module Roles list page.
Select the name of the module role to delete.
Select File > Delete.
Click OK.