Is possible to enter project information at receip level using iProc?

Hi,

Is it possible to enter a requisition in iProc, leave the project information in blank, generated the purchase order in Purchasing and when the PO is ready to receive in iProc enter the project information in the receipt?

If not possible, can I enter the project information in the Receipts form when I am doing the receiving of the PO?

Thanks,

cv