Hi @tuanphan I would like to try this. If you could provide the code, that would be great!
My site is https://www.vanishtravel.com/
Under the Field Guide menu, the first column should only include "The Northeast" and "The South".
When someone hovers over The Northeast, a second column should appear to the right including:
>Hudson Valley
>Catskills
>Poconos
>Adirondacks
>Vermont
>Maine
>Finger Lakes
When someone hovers over The South, a second column should appear to the right including:
>Big Bend Country
>Texas Hill Country