For additional information about barcodes, reference this article: Creation of Barcodes/QR codes
Creating a barcode in NutriCalc
Once you have obtained the numeric code, enter it in the Barcode Number field on the Barcode/QR code card in Details.
In the Reports tab, select the Product Barcode report. Choose the type of barcode desired from the dropdown. EAN13 Barcode is the default.