Unfortunately, I cannot answer your question exactly, but I'd like to suggest a potential solution.
Depending on your organizations email setup, you could create a email group, add the intended recipients emails and enter the email-group email address to the Q&A email field shown above.
This will allow you to email multiple recipients as intended and allow you to add more (than two) or remove recipients as needed. Also, if someone receives a promotion or leaves the company you will not need to worry about changing the email address, just the groups recipients - a sure way to never miss emails.