The admin email is a global setting where you input one email whereas thats the from email used in the program and the one that gets send emails from the system much the same as the technical email in the
vb config. It is one email.
Now granted you can make that a distribution email say
staff@yourdomain.com. Now for information on how to setup email distribution lists in your site you need to look at your hosting control panel. Thats the easiest way to distribute emails to multiple users.