Hi Ray,
You can speficy the SNMP configuration(Community String/V3Credentials) under Server Manager >> Server Configuration >> System Monitoring. And add the ClearPass server to any NMS with the same SNMP configuration for basic Monitoring like Memory/CPU usage, server up-time and basic system configuration as shown below.
The System Monitoring will allow the NMS to poll(SNMP) the ClearPsss to check the above status and basic system configuration.
Configuring "SNMP Traps Receivers" is where the ClearPass server will send the Traps to the specified receivers.