I have an Inventory base that was not created by me, but I’m the owner now. I have a Materials Checked In table, that I need to sum up the qty received by PO and description.

I tried using the Roll up, but it pulls all of the items by description, which is not helpful when I need to see items received by PO. This way I can see the Ordered Qty, Received Qty, then have an Open balance remaining per PO.