Reservations create duplicate emails and calendar invites

We are setting up Workspace reservation for the first time and encountering a problem. When I reserve a room and add an additional person, that person receives two emails and two calendar invites. They receive one email from me and a second email from Domain Admin. This is also creating two calendar events on the recipient's calendar. How do we stop the system from sending the email from Domain Admin so that recipients only receive emails from the user that added them to a reservation?