Enabling / Displaying the subtitle field on your Product detail pages

You can add a subtitle field for your products via the E-Commerce Settings area,  Change Product View Layout button.

1. Click the E-COMMERCE button from the main menu.
2. In the Display Options area, click the Change Product View Layout button.
3. Check the Include product subtitle checkbox in the opions to the right
4. Your products will now have a Subtitle field enabled on the product page in the CMS.

More settings related to the Product View layout can be changed via the Product View Options button.