Restricting access to pages
Only the page owner can configure access rights to their page.
You can restrict access to the pages you own:
Open the page.
Click the Access field under the page title.
Set a new access level:
Same as parent page — the access level is carried over from the parent page.
All employees — for all employees in your organization.
Only page owners — only the page owners can view and edit the page.
Specific employees — specify the usernames of people to grant access to view and edit the page.