This is for configuring the Java threads used to process CTI events. Min and max are the absolute min and max (for a single engine/JVM). The thread pool will grow within the configured min and max as users (CSRs) login to CTI, based on the users-per-thread configured. Note that these are a pooled resource, so you do not need a thread per user, for example.
Thanks so much Kandy Rathinasamy for sharing the significance of those fields. Can you also please help me in knowing the optimal values that one have to set to these fields in the Production Environment ? Do Pega provide any recommendation on those values to set ?