I cannot find a place to delete items in the cart. If it is not in PROCLAIM, it sure needs one.
Items in the current presentation that you do not own will automatically be added to the cart. There is no way to remove the items w/o removing them from your presentation. When you go on air you will be prompted to purchase items in your cart. You can choose to 'go on air with watermarks' to test going on air without purchasing the content.