Hi,
You can try to develop an application that reads the data in the two real time tables that IPCC Express populates (if you choose that option in the AppAdmin configuration).
Basically is develop a WallBoard but with the feature that send an instant message to a PC.
You can cretae a .NET application that connects through ODBC to the real time data tables in IPCC Express, checks the calls in queue for the CSQs that you select and send a message to different PCs if the calls are too much.
Hope this helps,
Juan Luis