Setting up voice tracks to allow manual insertion of unscheduled(emergency) voice tracks. In VT32>Options>VT Inerts> page. Place a check mark in Allow VT Inserts, then click OK.

To complete the process you will need to configure the SS32 to read the inserted voice tracks. In SS32>Options>Configuration>schedule> Select Search for and use VTI (Voice track insert) Files and Show VTI activity in air.log