The admin option to turn enable or disable the Reviews and Tell A Friend feature of ZenCart is not always easy to find.

You can do that via the Admin interface by ...

1. Go to Catalog -> Product Types
2. Select Product - General
3. Click "Edit Layout".
4. And you will find the options under "Show Product Review Button" and "Show Product Tell A Friend".
5. Click on the row, click the "Edit" button, make the appropriate selection of the droplist, and click "Update".