Is there a way to group notifiers?
Yes. Under the Notifiers dropdown in the Control Menu, select Notifier Groups. From that page, you create the groups you need and select the notifiers and devices to assign to each group. The notification escalation (when to start notifying, when to stop, etc.) remains in effect. Bear in mind that groups are device-oriented, that is, if a device is in a group, ONLY those notifiers in that group will receive alerts for that device. If a device is not a member of any group, all enabled notifiers will receive the alert, according to the configured escalation. If you have a situation where you need to assure that only certain notifiers get notified when only certain devices are in error, all devices must be in groups. In this case, all notifiers must be assigned to a group or they would not get any alerts.