I figured out how to use a drop-down control to select pieces of my sharepoint list such as PO No., quantity of unit, price of unit, customer name.... and so on. I want to make my "PO Number" drop-down list the master control. And I want to make the rest of my sharepoint linked attributes express detail about the PO number (master control) so I can create automatic POs, invoices, shipment content lists, .... and so on in regards to the key field "PO number".
Please send me any help you can.