Receive PO with NO REQ

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Client is not implementing Requisitions. Buyers will enter in PO--who will and how will user receive these POs? With self service Req, requestor will receive the PO. But who will in this case? Can buyer receive PO in My Receipts? What would the proper flow be when no Reqs are created, only purchase orders? Currently, I am entering in requestor name into each PO line and receiving it using that users, under My Receipts. But is there an easier or different way?