With Custom Fields, you can enhance existing product information by defining your own product fields to be shown on the Product Display screen. Create fields for any form of product data, such as ISBN, UPC, Manufacturer, and so on.
To add Custom Fields to a product follow these instructions:
Click the [+] next to Stores
Click the [+] next to your store’s name
Click on the Utilities link
Select the Check Box next to Custom Fields
Click Update
Click the Custom Product Fields link at the top of the page
Click Add
Enter Code (ISBN, UPC etc.)
Enter the Name for the custom field
Click Update
Go to Pages
Click Edit for the PROD – Product Display Page
Click the Product Display Layout link at the top of the page
Select the Check Box next to your Custom Field
Click Update
Go to Products
Click Edit on the product you wish to add the custom field to
Click the Custom Fields link
Enter the information into the custom field
Click Update
Your custom information will now appear on the Product page