The response from the Pilot Service Center indicates that any further absences other than the initial one will be handled by Crew Scheduling and initiated by the Pilot. Proof is required but if you are never called in, you need only notify the PSC and tell them as much. If you are called in the court will provide a Certification of Court Attendance that you will submit to the PSC.
In any event you will be paid in full for any trips missed due to Jury Duty per the CBA.