Question about Thanks, Roy theme

I’m trying to figure out how the person who implemented a site using Thanks, Roy achieved an effect (the person is no longer at the institution and it’s an orphaned site)

It’s this:

Does anyone know how she did the mouse-over interactive drop-downs in the lefthand menu for the Exhibitions and Gallery? Is that a standard feature or something customized? I know that all the target pages are exhibits.

That’s a feature of Thanks Roy - if the navigation has child pages , the menu should add the mouse-over interaction.

Do you have a site with Thanks Roy which isn’t showing this behavior?

I figure out the issue. I was still working on it and hadn’t published it yet.