How to Link a Folder in the Top Nav to a Webpage

Hi There!

This is frustrating, does anyone know how to link a Folder in the Top Navigation to a specific Web Page? Apparently Squarespace does not have this function available yet. 

Basically I just want to add a link to the "Products" folder to the below web page: https://www.garrisonflood.com/our-flood-control-products

Does anyone know how to do this? Any help or guidance is greatly appreciated!

Thank you,
Josh

Perfect, thank you so much!