If you have just placed an order, you can edit the quantities or specifications of the products. However, it is not possible to add more products to an order you have already placed. To order more products, simply place a new, separate order. If you no longer want the other order placed, simply cancel it using the drop-down menu on the right-hand side of the screen. However, if you wish to consolidate shipping it is best to cancel all orders that contain separate products and place one order that includes multiple products.