BMS Notification Address

[Ospot]

As part of our notification process, we send PIN messages to our Admins using the BlackBerry Monitoring Service. I'm trying to figure out how to change the 'From Address' for PIN messages. In BMS, you can change it for email but nothing for PIN messages. The default 'From Address' is something like 'admin@yourdomain.com' and would like this changed. Any ideas?

Thanks.