Orders cannot be deleted. However, you can remove all reservations from an order, and it will then disappear from the table. Additionally, if you completely delete a resource, all of its reservations will also be removed.
You can view order details without any reservations only in the table view. In
the calendar view, this information is not available because it is designed to display reservations, and there are none in this case.
To display empty orders, make sure to add at least one column with order data to the table. This is necessary because, for these orders, all reservation columns will be empty. You can learn how to add columns
here.
Also, ensure that you are displaying orders that were Created within the period. Alternatively, you can select Always.
This is how the table will appear with empty orders.