Good news!
Now you can set the permissions for
groups when creating or editing a
page:
If you find that is not enough, please
write your suggestion.

Setup
open....  /admin_pages.php To create a new page or
edit an old page (Specify the users group you are
allowing to view the page)
NOTE (By default)
there are 3 users group (See... /admin_groups.php
Administrator
Moderator
Users (members)
Goodluck