Build a mega menu is easily with Elementor. Go to Boostify Header Footer builder -> Add new, in Type, select 'sub mega menu' option. Then build this sub mega menu. To add it to the header layout, in ...

How to add a new Meta to Elementor widgets for using them at many places? How add my "metakey's" from "postmeta" database table to a (same at attached screenshot): "Posts widget - Meta - Author, Date, ...