I've installed the Barcode on Packing slips module, and the associated Auction Sites Attributes module. But I can't figure out where to enter the UPC info!

A generic barcode appears on the paking slips, but they are all the same becasue I haven't entered unique UPC info for each product. The readme for the Barcode module indicates that I should be able to ad that info in the product's page... but there is no UPC field. I did the SQL mod and no errors ere reported.

What am I missing? I'm sure there is an obvious answer, but I'm not seeing it....

Diane