Can I restrict the Helix Ultimate Mega Menus to only show one level of child categories?

I am using the Mega Menu of Helix Ultimate on the Charm template. I would like to figure a way to not show all the levels of child menus because my site can be very deep and the menus would be just too crowded.

Instead, I want to limit to one or maybe two child categories and then on each category page also display somehow the subcategories.

Is there a way to do this?

For example on the Shop menu I am thinking to only display the four top level child pages and then have every page display the subcategories of that page. I will open a separate ticket about the subcategories though.

Being able to restrict the depth of child categories displayed on a mega menu page would really be great if it could be configurable somehow to not have to always keep the same depth of child categories.

On the page I have attached I am thinking it would be desirable to only display the top level pages that are in bold.

For other sections of my site it will be really messy to try to display all the levels of child categories in the menus.

Instead, I hope to display the subcategories in some other way on the page.

Sean