Waitlist Confirmation - Ability To Edit

Would like to be able to edit the Waitlist Confirmation email, like we can edit other Email Receipts, Confirmations, etc.  Need to be able to add that customers will be Auto Charged, not just "Notified" when openings become available. The number one Credit Card Chargeback we get is from customers saying they did not know they were going to be Auto Charged because the confirmation just said they would be "notified" if space becomes available. We have the details on all our Event Descriptions and Website, but people always refer to the confirmation email.