Drupal 7 Commerce : How to send Emails to Users of a Certain Role

1.  'store settings' > checkout settings > click on the 'checkout rules’ tab  >
2.  Click on ‘Add a Checkout Rule’ 
3. Fill out a name
4. Add Event - Completing the checkout process
5. Add Actions > Under system > ‘Send HTML mail to all users of a role’ 
6. SAVE