Hi,
That's possible. For that, you want to :
- edit your menu item and turn on the "add to cart button" display setting, under the products options tab.
- go in the HikaShop configuration page, and set the "Add to cart on listings" setting to "global".
I would also recommend turning off the "infinite scroll" setting for this menu item, and maybe increase the number of rows in order to display all the products directly on the page. I think it will be nicer for the users. Also, you might want to switch the layout to "table" instead of "div". It normally makes more sense when you have this kind of setup.