Hi Nick, If you would like to charge a fixed fee by default for each order, you can choose the "Flat fee" as the product type and specify the price. The users won't see this product in the form. The price of the flat fee product will be automatically added to the amount. If you would like to users to select an item to place an order, then you can add a product sold by quantity, weight or with variants. If you want the users to rent a projector, you can use one of the options below. Product type: Sold by quantity Product title: Rent Projector Product price: $$$ Quantity options: 1 By default, 1, 2, 3, 4 and 5 will be added as quantity options. you can delete 2, 3, 4 and 5. Product type: Sold by variants Product title: Rent equipments Variants: Projector By default, 1, 2, 3, 4 and 5 will be added as quantity options. you can delete 2, 3, 4 and 5. If projector is the only equipment that they can rent, the you can directly specify the product price. If there are other equipments, then add them as variants and use the variant price option to specify the price for each equipment.

Thanks so much Vipin !