I have successfully set up a custom menu and added a replacement link for a page so that it is available on the top-level navigation menu. I have then placed child pages under this link so that I have a placeholder for the child pages. As so:
There are several issues regarding:
1. Will this correctly work with search engines?
2. Sitemap shows all pages, including blank one
3. What is the best way to achieve a navigation link to child pages without having a blank main page, as in “About Us” page and keeping search engines happy.