How to create complex mega menu in generatepress?

Hello Support,

I know here is the guide to create mega menu with code, but as it says it is simple mega menu.
https://docs.generatepress.com/article/building-simple-mega-menu/

My question is how to create complex mega menu? Can GP do something like Astra does?
It can activate the mega menu in the wordpress menu builder and allow to select content from the template(astra custom layout or elementor, widget, etc)
Can GP do this?
https://snipboard.io/xgYXi2.jpg
https://snipboard.io/m75jBz.jpg

Thank you
Michael