I'm working on rewriting a cookie site (http://opescookies.com). In their order now tab, if you select a quantity for the box of cookies, it opens up a window with the ability to enter custom quantities for different types of cookies, to add up to a given total. Then when completing the checkout, adds it to the cart, listing all the cookies and quantities selected.
I want to copy this functionality in woocommerce, but I'm completely stuck on where to start. I can't seem to find a plugin that offers this functionality or the built in variations options, to allow it. Could someone point me in the right direction? Either by providing a plugin or offering some words of wisdom?