The correct answer is purchasing process.
Anytime that inventory needs to be ordered there is a process that needs to be followed. Quite often, this process is going to involve a purchase order. A purchase order is a document that the buyer issues to a seller. It is an official order being placed and includes all of the purchase information like brand, specifications, price, quantity and shipping costs. A possible process in this case would be that Joel would supply all of the information to the purchasing department, the purchasing department would create the purchase order and then a manager would sign it and send it to the supplier.