To edit a "Custom User Role":

• Login using an account that has 'Administrator' privileges.
• Click Settings on the top-right, and select Manage Users from the menu.
• In the resulting page, click  Manage Custom User Roles link under "Manage User Roles" section.
• In the resulting page, click edit link next to the desired custom user role.
• In the page appears, modify access privileges and details for this custom user role. Then click "Save" button.

When you modify access privileges of a custom user role - users who are currently assigned that role will have their access privileges automatically adjusted upon their next login.