Application alert facilities exist under parameter control to notify nominated users of certain system events eg. Priority calls not allocated etc. Such events cannot be dismissed; the action of allocating the call removes the alerts. User definable status codes exist which can be set up to collect additional status details for pending reasons, cancellation reasons etc. The multi-user nature of this application makes it difficult to control the allocation of reactive calls to engineers. The system contains a number of features designed to assist with this task. The first is the application event notifications that occur when a call within a parameter controlled priority range is left unallocated for a parameter set period of time. The other is the outstanding call update function that allows the user to extract outstanding calls via a variety or criterion that includes; call status, contract, zone, engineer, client district or area. From the resulting records there are options to present details of the calls and to allocate or change the status with minimal keystrokes.