In the Info menu, that appears when you right-click on the order rows in the lists, you will find a few functions used to link to other procedures with the correct order number or supplier loaded.
Update Part [part number]
Link to the Update Part procedure with the correct part number loaded.
Update Supplier [supplier code]
Link to the Update Supplier procedure with the correct supplier code loaded.
Register Purchase Order [order number]
Link to the Register Purchase Order procedure with the correct order number loaded.
Report Receiving Inspection for [order number]
Link to the Receiving Inspection Reporting procedure with the correct order number loaded.