With Groovy menu you can add any content to the menu dropdowns (including mega menu), using most of popular page builders as Elementor, WPBakery and others. The full list of supported Page Builders can be found here.

Example: Mega menu block created with WPBakery page builder

Note. How to enable WPBakery mega menu

Note. How to enable Elementor mega menu

How to add Mega Menu Blocks

To create a mega menu blocks please go to Groovy menu > Menu Blocks and click on Add New Menu block button

Note: In most cases that to show the page builder interface in the Menu Blocks section, you need to enable show the builder in the custom post types "gm_menu_block" somewhere in the your page builder settings.

How to add Menu Blocks to the site menu

To add a menu block to the site menu go to Appearance > Menus and select menu block in the sidebar.

Note. If you don't see Menu blocks tab please check if the appropriate checkbox is checked in Screen Options