How to add a brand section to the menu?

Question

1C-Bitrix

There is a standard Bitrix menu


. How to add brands filtered by section to it with a 3rd level? those. for your walls, for your ceilings?
Brands are loaded to the product as a property.

As I understand it, you need to get the properties of the elements for each section - "brand", group them, and add the next level to the menu.

Maybe someone did, or saw an example, I would be grateful