Hello,
Do you want to create menu item that will have mega menu with tabs that will display the categories when you hover over these tabs in the manga menu?
We don’t have such option unfortunately for the mega menu. So, you probably need to look for the mega menu plugins to implement that.
Using our mega menu you can just create mega menu that will display the categories https://youtu.be/f07MBdnFPfk but not with the tabs with the categories.
Regards