#1. You can copy this section, then paste it into the new Item menu.

– Step 1: Open the Sub menu editor of the first item in the menu: https://prnt.sc/2XC3RyrFb065
– Step 2: Right click on the section and select copy: https://prnt.sc/TgH-H6wTXkZt
– Step 3: Click Edit Mega of the item you need to add submenu -> Click Edit Megamenu Submenu similar to step 1
– Step 4: Paste the section copied in step 2 and edit it

#2. Set Sub Mega Menu Max Width: https://prnt.sc/bfDNqYKNGbzz