Create PO
Start a new purchase order — vendor, expected arrival, and the SKUs and quantities you're sending.
Receiving → Create PO starts a new purchase order: list the SKUs and quantities you're sending in, and the warehouse receives against it.

Set the vendor, expected arrival, and optionally tracking and a note.
Add lines — pick each SKU and the expected quantity.
Save. The PO appears as Pending, ready for the warehouse to receive against.
Duplicate a PO
Reordering the same assortment? Open an existing PO and Duplicate it to pre-fill a new one with the same lines.