Hello,

Please navigate to Appearance -> Menus and from the left sidebar select an appropriate category: https://take.ms/3iw82 , in case if you do not have such a “Product categories” area, you can enable it from “Screen options”: https://take.ms/TOSgk

Then go to WoodMart -> Header builder -> for the “Categories” element choose created menu: https://take.ms/cWEWV

In the meantime, feel free to ask me any questions you may have.

Kind Regards