Roll Up Ping devices

I would like to monitor all our DVR's and have the health's roll up to the top. If one of the DVR's can't be pinged, I would like the entire group to display as critical. I can't seem to find out how to do this. If I use the OpsLogix Ping MP, will this allow me to create a group and have it roll up?  I will have several of these groups fro different devices.