Creating a CMS Collection from Categories (ECOMMERCE)

Hi Everyone!

I’m trying to make a CMS collection from existing, published categories on a clients site - I am doing this to create a more efficient navigation system from a drop down menu

At the moment, there are a lot of categories, we want to seperate them into Bronze/design - So when a user clicks on the dropdown - they can navigate between the two subcategories.

I intend to create an itemised list - using collections.

Please help!

Thanks,
Aaron