Go to Navigation to create a menu. Click Add menu to add new or choose any items below the menu to edit.
Write the menu's name, then choose Add menu item. Write the menu item's name and choose the item in the dropdown box > click Add.
To make an item a child menu, drag it under the main item.
Menu items can also be added to create the same level as a child menu.
Steps
In the theme editor (Customize)
Theme settings -> Header -> Header layout -> Select layout 4
Check Vertical Menu section, then edit menu and use the created menu.
Save
Menu Item (Parent)
Link list (child)
Banner (child)
Dropdown menu
Single Link
In the Vertical Menu section, Add block > Choose Block (Mega menu).
To the mega menu work normally, you need to a Parent block - Mega Menu and then have the Child blocks.
Parent block:
Child blocks:
config : Child blocks
it allows you to select only one menu in this part.
