I have a Nortel M-1 system, with two sepearte ACD groups. There are two supervisors each with a need to have the call center stats viewed on the phone display. I am able to give each of the supervisors the ability to view one of there groups, but am not able to give them the ability to view both groups. What additional keys or commands are needed to provide this feature? Is this even an option? Any help on this subject would be greatly appreciated.