Setting up your mega menu is as easy as 1, 2, 3! You can have up to 8 mega menus displaying on your store. Use what makes sense for your store. Don’t worry, it looks scary, but it’s actually very simple!
Each mega menu supports up to 9 navigations, you must first create the navigations in the back end of Shopify, you'll find the section in Online Store > Navigation. An example of a navigation could be 'Men's Clothing' that contains Jeans, Shirts, Shorts Collections. Another nav might be 'Women's Clothing' with the relevant women's clothing collections under it.
After you have created the navigations, simply link them inside of your chosen mega menu.
Here's an interactive tutorial for the visual learners
Menu Text – Here is where you put your menu title. This affects the Menu label itself. You will see “Mega Menu Demo” change yours to fit your store. Ex: “Store Menu”.
Submenus – Submenus are the collections you link to. Just click “Select Menu” and choose the navigation you wish to display in your mega menu.
Mega Menu Icon – You’re free to change icons to your own custom icons if you wish. Icons must be 75×75 pixels or less.