In my company, we use delivery plans for almost every purchase, as we simply set up a contract for a component from a particular supplier and then the system automatically schedules your deliveries for you based on your needs and settings in material tribes. Appointments can still be used, even if you only want to order a few times in a given year, as we do this for some of our bulk products, for which we have very large minimum order quantities that do not have much consumption. The contract does not have predefined delivery dates. First of all, you need to create a contract, and in this regard, you need to create a lot of orders (i.e. release orders) that are based on each time you need to create a delivery until the contract expires. .