There are other considerations that help you understand how to optimally use the parallel job manager.
You can keep the default value for the TransactionTimeOut property in the top-level job xJCL. You can alternatively adjust it depending on the transaction timeout of the subordinate job.
You can view job logs for a subordinate job from the job management console. The PJM retrieves subordinate job logs for its logical job and aggregates them into its top-level job log.
If the top-level job and several subordinate jobs are in the restartable state, then restart only the top-level job. If you restart any of the subordinate jobs manually, then the top-level job does not process the logical transaction properly.
You can use the jobrecovery script when a primary site fails to allow a secondary site to take over.