How to restrict access to a page
Only the page owner can configure access to it.
You can limit user access to the pages you own:
Go to the page.
Click Access under the page title.
Set a new access level:
Like the parent page – Inherits the access settings from the parent page.
Everyone – The page is available to all users in your company.
Just me – You are the only person who can view and edit the page.
Specific employees – Add the logins of users you want to grant access to view or edit.