01) Access the Control Panel
02) After login click on Configuration >> Customers Testimonials
03) To activate select Display Date Added Box Customers Testimonials Index >> EDIT >> Change to show >> After clicking on the Update button
To deactivate select Display Date Added Box Customers Testimonials Index >> EDIT >> Change to hide >> After clicking the Refresh button
Note: You must have at least 3 customer reviews to have the box appear.