As shown, different calls can have different frequency ranges for their alarms.
The individual frequencies for each range can be changed. Pressing "Default" will reset the frequencies.
Email can be sent to you at work so you can sneak out and work the ones you need. Emails can be sent on a per callsign basis. Selected calls will have a red bar to the right of the callsign.
Some ISPs require that the "To" and "From" email addresses be enclosed in < > brackets . If it doesn't work without them, try it with them!
To debug problems with email, put a check in "Show Sending", and then save. Then from the main screen go to "Set>Debug Mode", and enter a check. This will give you a display of the email conversation with your ISP.