In CP, we have the option for users Admin or NON Admin.

ADMIN is fair self explanatory, the standard one we use every day.
NON ADMIN - was designed to restrict a user to certain pages they are allowed to see and work on.

To enable the NON ADMIN user, requires editing every page you want them to have access to and changing a variable in the page to 1, the NON ADMIN user value.

Now there is a better way.

Login as ADMIN, the mod then allows you, in the ADMIN > Developer Tools > Admin Menu Manager section, to set Non-Admin access for each page (Admin always has permision for each page.

 

DEMO:

ADMIN DEMO HERE

Admin Login/PW: admin/admin

NonAdmin Passwords: password