The category dropdown on the main page (in themes like Novator) is usually auto-generated from categories that have products assigned. If the category is empty, it won't appear in the "All Categories" menu by default.
You don't need to manually add it to the layout unless you want a custom display. Just try adding one or more products to your new category, and it should show up automatically.
If you want it to appear somewhere specific in the menu (outside of the default dropdown), you can go to Admin > Design > Menu and add it manually as a new menu item. Hope this helps!
You don't need to manually add it to the layout unless you want a custom display. Just try adding one or more products to your new category, and it should show up automatically.
If you want it to appear somewhere specific in the menu (outside of the default dropdown), you can go to Admin > Design > Menu and add it manually as a new menu item. Hope this helps!