Scan the WO barcode, then the LOC barcode, and the work order moves there. You can also scan several WOs and then one location, or a location first and then WOs (each WO moves to it right away). These are the move barcodes, not the per-operation photo-upload QR codes.
Work orders waiting
None. Scan a WO label.
Location armed
None. Scan a LOC label to arm it, or scan WOs first.