Follow these steps to edit your order each week. 1) Log in to your profile via the top right of the page. 2) Click on the 'Subscriptions' tab on the menu. 3) Click on the 'update meals/subscriptions' in the top menu 4) Click on 'add a product'5) Choose the extra products you wish to add to your order 6) Select the quantity & order frequency, then add it to your cart7) Once you return to the home screen, click on update meals/subscription once again 8) Click on the product you wish to apply the discount to: 9) Scroll to the bottom of the page, click 'add discount'. Enter the discount code & it will apply to the item.