USM has a powerful feature to manage user roles and permissions. Any employee's permission in this system will be managed by this feature. This functionality will be available in Settings module. You can access the Settings module via menu bar found at right top of the application.

Step 1 :  Click on Roles and Permissions link in the left side to access this functionality. Once you are in this page, select the user type for which you want to set roles and permissions.

Step 2 :  Once you select the user type, you can simply assign any roles to the user available in this system/application. You can also create external user and assign the roles via clicking on Add New User button.