We have a lot of Opmanager alerts for certain servers, routers, switches, networks, etc that send out an email to an alert distribution group when one device/system goes down.  What we would like to do is to create a kind of master alert that would watch say 3 different devices and then send out an email to an escalation distribution group if only if all 3 go down .  I'm not sure if this is clear, but let me know if you have any questions.  I'm looking to see if this is possible?