Here is the instruction you can follow if you desire to set up a menu vertical for your site:
Step 1 - Simply, navigate to Appearance→Menu
Step 2 - Create a new menu that you want to use do the vertical menu and click Select button
Step 3- On the right, feel free to drag and drop menu items to organize them
Step 4 – When youare done moving menu items, check a menu location at the bottom of the page and click Save Menu
NOTE: The vertical menu only works to Header Layout 4 and Header Layout 6, to set up the vertical menu please follow these steps:
Go to Appearance→ Theme Options → Header and Footer
In addition, you can override a vertical menu for Page or Root Product Categories (Parent = 0)
Our theme is designed by default with 3 levels of sub-menu, if you want to display sub-menu with 4 levels , please insert the following code in / wp-content / themes / elessi-theme-child / functions .php: