Lnyc Alerts

In Windows 7, when I received an IM via Lync there would be individual contact converstions shown in the bottom tool bar. These conversations would flash until the receipent would acknowledge the IM. I/we miss pertinent messages because Windows 8 does not have the continuous alert. The Windows 7 alert flashes for about 30 seconds and then stops. Is there a way to change these settings? These alerts are very critical to our business functions and processes.

Thanks

Lori