Adding a navigation menu to your shop makes it easier for visitors to identify what they're searching for. You are encouraged to add Home, Catalog, Contact us, and About us. If you add more than this, your store will get cluttered, and navigating will become difficult. The main menu and the footer are the two types of default menus in Shopify.  Shopify also supports a drop-down menu. Under Online Store, select Navigation, and choose the menu you want to edit. Create a new menu item and drag-drop the item underneath the top-level menu.