How to Show Category in Top Menu in PrestaShop

After creating a new category in your PrestaShop store we should add a new category link to the frontend menu.

Step 1. Navigate to Modules section on the left side-bar and click on the Modules and look for Top horizontal menu

Step 2. Click the Configure button to access the module configuration page.

Step 3. In Menu Top Link field you’ll see two columns. The left column displays current menu elements and the right one displays available menu elements. You will see the list of all your categories, CMS pages, manufacturers and suppliers as well as the option to add the link to the product page.

Step 4. To add a new element to the frontend menu, you should select the required element on the right and click the Add button.

Step 5. Click Save to confirm adding a new menu item for the top menu.

Now we added a new category and linked it to the top menu. 
To remove element from frontend menu you should select the required element on the left and click the Remove button.