Changing the Admin for Support Tickets

I understand that the plugin only sends notifications to the first network admin. However, im the site designer (first admin) and my client (second admin) is the person who needs to access, respond to, and get notifications of support tickets - not me. i tried changing the registration date in phpmyadmin, but im assuming its working off of user ID#, which im a bit afraid to change do you know how i might accomplish this?