How to display product quantity selection in Opencart category?

Question

opencart

Good afternoon, please tell me how to display the quantity of goods in the opencart category? The same as in the product card. It seems that I have already looked everywhere in the controller and in the model and in the templates, but I can’t finish it. You need to do it as in the screenshot (not necessarily visually the same, just what would work and add the selected quantity to the cart). All the modules that I have tried, they do not seem to work with my theme.