Here is another excerpt from the QuickBooks Point of Sale Store Operations Handbook:
To create a Purchase order, you can click on the Purchasing menu and choose Make Purchase Order from the main screen or “make a Purchase Order from the Navigator screen.”
When the Purchase order is on the screen, click on the I want to… Menu and choose Select from Item List. Once the item list is displayed, you will be able to add new items, copy items and use the style grid to create new items. Please note that the Purchase order screen and the item list that displays is the old Interface and not in the V10 new interface. This is a good and bad thing. The old interface is generally more functional for data entry, but the difference between this inventory screen and the new inventory screens can be jarring.