Yes, this is done by defining and mapping Device Groups to Recipient Groups, as follows:

1. Launch MobileAlerts Management Console
2. Go to Device tab
3. Select Groups tab
4. Click New Device Group button
5. Define a new Devices Group (see MobileAlerts Administration Guide >> Administering Mobile Alerts >> Devices >> Groups section for more details).
6. Go to Recipient tab
7. Select Groups tab
8. Click New Recipients Group button.
9. Define a new Recipient Group (see MobileAlerts Administration Guide >> Administering Mobile Alerts >> Recipients >> Groups section for more details).
10. Go To Monitoring tab
11. Select Map Devices to Recipients tab
12. Click New Mapping button
13. Define a new mapping of Devices Group to Recipients Group (see MobileAlerts Administration Guide >> Administering Mobile Alerts >> Monitoring >> Map Devices to Recipients section for more details).