Board Thread:Support Requests - Designing Your Wiki/@comment-32208649-20170901012429/@comment-26923519-20170901191313

I'm pretty sure you mean protecting pages. Well, to protect pages, you need to at least be a content moderator in a specific wiki. Next, go to a random page or the desired page, hover over the drop-down button of the "Edit" button, and click "Protect". Choose the desired options for the protection and you're done, the page is protected.

Like Fandyllic said, all details can be found on the help page.

Important note: Do not protect too many pages, as this is a violation to the ToU. Sure, you can protect certain pages if they were high-traffic or excessively vandalized, but don't protect too many.