Category dropdown when a category is selected

Hi,
I’m using Hamzahshop Pro for a webshop (www.brabanttextiel.nl)
When on mobile shop, a user chooses a category to show products for a specific category. The products for this category will be shown, but the user needs to scroll over all existing categories again to see the products.
Is it possible to have the categories ‘grouped’ in a dropdown box when a category is already selected?
Wouter