So, you’ve created a menu and would like to add certain categories to it. But when you look through the available menu items, the ones you need are missing. 

Please stick to the routine below to make it happen.

Go to Appearance > Menus in your WordPress dashboard and press the Screen Options drop-down. You will see a list of Boxes that can be added to the menu item list. Find there a “Products categories” option and tick it. 

Refresh the page.

You can spot that the “Product categories” option appeared on the menu item list. 

Now, press the drop-down arrow and add the desired categories to the menu. Just tick them and press the “Add to Menu” button.