1. By default when you're adding a new page it is put into Draft status. The draft page lets you work on a specific page until it is ready to be published and seen by your website visitors. Click "Save Draft" to save the changes you're making on the draft page
Anyone who is not logged in to the website builder will see a 404 page for a page with Draft status.
2. Click "Publish" if you're ready for your draft to go live
3. You can change the status of the page from Public to Draft and vice versa in the Publishing section in Page Properties. You can put any page into Draft except your Home Page.
If you need to hide the Home Page, use Password Protection or Under Construction mode