Product Variations

Can you explain how you have setup the variable products? Are you using a paid woocommerce plugin for this or can it be done for free? Reason i ask is i have added some variable products and it looks nothing like what you have on your demo. I really like the “add extras” part on the meals you have when you add it to the basket and its in the popup. Currently in my popup i just have a dropdown to select, i want the radio buttons to select extras wanted with the meal. thanks