Notification groups will allow you to limit notifications to a specific station or unit group based on units from dispatch. These could be real units or dummy units used just for notification purposes. Keep in mind, any notification group you create will not notify users until a specific unit in that group is added to an incident.
In the below example, STA21 and BALL would notify early and make for a good key unit for a notification group. A21 would be a slow notification and would not likely work well to key from.
Notification groups are created through your iSpy website in CAD Settings.
Here is a quick video on CAD settings in iSpyFire!