Ship Date and Cancel Date are optional and may not be relevant for your products or orders.
In some industries, especially fashion, orders are collected in advance for a specific season's delivery. If your products are available and ready to sell, you won't need to use these values.
Instead, if you wish to communicate turnaround time or the time it takes to ship your goods, we recommend putting that information elsewhere (e.g. Terms of Sale or as text in Presentation).
The Ship Date lets the Buyer know when the order is expected to ship to them. Usually the Seller will set this date to let their Buyers know when they plan to deliver. In some cases, Sellers will allow the Buyers to specify this date so they can pick an appropriate time to receive stock.
The Cancel Date (or "End Date") is not always used, but it allows the Seller and Buyer to agree on a deadline when outstanding orders will be cancelled if not fulfilled or shipped.
The time between the Ship Date and the Cancel Date is considered the Ship Window and may be a range of weeks to months. This gives both parties a window of time in which the ordered products can be expected to ship.