[Theme Techozoic Fluid] Parent/hierarchies

Trying to set up a three tiered hierarchy. The parent, child, sub child. The parent/child works fine with the child as sub tabs on the parent page. But the sub child doesn’t appear anywhere on the site. No tabs on the child page, nothing. Is there a way to have the sub child tabs appear on the child page or do I have to create a link on the child page?

Thanks

By the way this is a great theme. Well thought out and executed.