To manage the user privilege, and admin allowances, are the reasons for this tool.
You can simply access the manage library, and select “Roles” to see the entire user list (F 1.0). Every user has a setting bottom to modify his/her roles. Once you click “Edit Roles”, you will get the roles details (F 1.0).
Simply scroll to the “None, View, or View/Edit” in any section suitable for the selected user to assign that role to him/her (F 1.1).