There is no way to do Sub Menus in a public theme via the control panel? I have to do something in the code? I read the documentation but it assumes some understanding I don't have. Is there a video on this?
This is correct. Our only method of adding the sub-menu is via our instructions you can find here.
While we don't currently have a video on how to do this. I would recommend giving this an attempt and if you're stuck or need assistance reaching out to us at firstname.lastname@example.org.
Complete and current information on how to use NationBuilder is available in the documentation section.