Hi There,
Thanks for writing in! Regretfully this isn’t a feature offered by X. It could be possible with custom development, but this would be outside the scope of support we can offer. While this is outside the scope of support, I could point you in the right direction with the understanding that it would ultimately be your responsibility to take it from here.
Wordpress has a documentation how you can register a new menu here: https://codex.wordpress.org/Navigation_Menus
You will need to modify a file named wp-header.php under the child theme’s \x-child\framework\views\{YOUR-STACK}\ directory.
How to Setup Child Themes
Cheers!