The View/Place Order function is useful for ordering additional copies of a title that is already in the catalogue.
Click Other Actions → View/Place Orders
Click Add to Purchase Order
Type the beginning of your purchase order name into the field and then select it from the drop down that appears.
Click Apply.
See Chapter 10, Adding Line Items to Purchase Orders for ways to add additional line items.
OR
See Chapter 12, Working with Line Items for information on updating your line items.
OR
See the section called “Activating Purchase Orders” for information on activating your purchase order.