Step 8: In the "Delay" section you can specify the delay between the moment a subscriber wins a reward and the moment the email is sent (you can set this to "immediately"). The "Settings" section is the important one. From the dropdown, select the RH_TOTREF and set the value to the number of referrals needed to win a reward. For example, if you want to send this email when a subscriber wins a reward that requires 5 referrals, set the value to 5. Remember to save the changes by clicking on the "Update trigger" button.