You can hide any page from your website's menu bar and add a link to that page to a button, image, or text.
1. Within the editor, open the Pages and navigation panel on the left.
2. Find the page in question, and click on the settings wheel next to its title.
3. Select Hide from navigation. Or simply drag the page down to the Hidden from navigation section:
4. Update your website for the changes to reflect online.
To unhide a page, open its settings and select Show. Or simply drag the page up to the Main navigation section: