Hello,
1/ We have added custom shortcode to show menu from menu location which is set by param -> http://prntscr.com/1qvsrx1 (xstore-child/functions.php)
2/ Now you can do the next – https://prnt.sc/1qvsvox
There will be shown menu that is chosen here -> http://prntscr.com/1qvsya3
[etheme_custom_menu_location location="max_mega_menu_1"]
Regards