What I was refering to was the fact that when you add a page, by clicking the plus button, it becomes a page you can link to, but not a page that shows up in the navigation of the websites navigation menu that you see on the live site.
For example, www.ztoolsonline.com/ , I want to add another menu item that says "Product Demo". But I would only be able to link to it via text on a page, and not through clicking on the navigation link in the menu (to the right of Purchase).
About us - Purchase Product - DEMO - Contact Us