To restrict who can view or edit a page or blog post:

1. Chose the Restrictions  icon at the top of the page.
2. Choose whether you just want to limit only who can Edit, or who can View and / or Edit
   
3. Enter users or groups then click Add to add them to the list. 
   If you chose Viewing and Editing restricted you can further specify for each person or group whether they can edit or just view the page. 
4. Apply the restrictions.

You can add as many users and/or groups as you need.

In this example, some users and groups can view only, others can also edit, plus there are inherited restrictions that might impact who can view the page. 

How do inherited restrictions work? 

View restrictions are inherited, which means a restriction applied to one page will cascade down to any child pages.  Edit restrictions are not inherited, which means pages need to be restricted individually. 

The restrictions dialog will tell you when there are inherited restrictions that might affect who can view your page.

Here's the basics:

• If you restrict viewing to a person or group, only they will be able to see that page and all its child pages (unless there are further restrictions on the child pages)
• If you restrict editing to a person or group, they'll be able to see and edit that page, plus see its child pages.
• Parent pages (higher up in the page hierarchy) can have their own view restrictions that may prevent people from viewing your page. 

If the person you've listed as a viewer or editor can't see the page, check to make sure:

• they have View space permission for that space, or
• there's no view restriction on a page higher up the page hierarchy that prevents them seeing any children of that page.