Overview: SubNavigation is a shortcut for putting a list of all the links that are children of a given page on the page as content. Below you can see the list of links in the far left of the website and you will notice they are exactly the list in the drop-down 3-rd level navigation.
- Add New Segment
- Instead of 'Text' select SubNavigation in the Segment Type Dialog
- Select the parent page for the SubNavigation (click the ... to access the site map)
- Enter a Title if wanted (will style the same as other segment titles on your site.)
- Click Ok