Each page in the CMS exists in two versions: public and draft. The staff users generally use the draft version to edit content and change settings for the pages. None of these changes are visible on the public site until the page is published.
When a page is published, the page must also have all parent pages published in order to become available on the web site. If a parent page is not published at the moment, the page goes into a “pending” state where it will become automatically published once the parent page is published. This enables you to edit an entire subsection of the website and publishing it once all the work is complete.