Un-Publish A Page On Your Website
To un-publish, an existing page, click "Pages" on the left side menu panel, and hover over the page you want to un-publish. Click the cogwheel icon, and then click "Settings".
A window will open allowing you to edit your page settings. Under the "Basic" tab, uncheck the "Publish Now" checkbox, and save your changes.
Note: You can also uncheck the "Add to Main Menu" checkbox to remove this page from your navigation bar.