How do I create a mega-menu?

Expanse will automatically create a multi-column "mega-menu" dropdown for your navigation wherever your navigation includes three levels of links. 

Each third level of navigation will get split into its own column of links. For example, the layout above was created by the menu below:

To add some visual impact, the first product image available in the top-level menu item link will automatically appear in the menu. You can see this for Homestyle, Lifestyle, Kids, and Brands in the example above.