You need to use both fields from the warehouse administration monitor in order to select e.g. Inbound Deliveries of priority 1 and a couple of, and to select Handling Units relevant for these kinds of deliveries which have been meant to drop by particular putaway Locations with your warehouse. : https://sap-s4hana05937.blazingblog.com/31944018/the-basic-principles-of-sap-support