How the payment forms work.

You can open each form and select the items you would like to purchase or donate. If you are only purchasing or donating from one form, you may click "add to cart and checkout". If you are purchasing or donating from multiple forms, you may click "add to cart" and open the next form you wish to purchase or donate from. When you have reached the last form, you may click "add to cart and checkout" or simply "add to cart" and then you can view your cart by clicking the "items in your cart" link at the top of the screen.