Navigate to Configuration > Product Master Extension.
Click the Add icon to create a new Extension (table).
Set up the columns you need.
Hide all unused columns.
Log out and log in (to see your new Extension).
Navigate to Master Data > Product Extensions and select your new extension.
Add data to the Product Extension: either add a couple of lines for existing Products or import them from an Excel file.
Add the Extension to the Product Detail page.
1. Navigate to Master Data > Products.
2. Select the product and click the Edit icon.
3. Select your new extension in the Category combo-box.
Now you can see your extension in the Product Detail.

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