Scope
The Join Job (JobSchedulerJoinOrders) is used to join up two parallel executing child segments in a Job Chain. It then continues processing in a single thread once processing of the parallel threads has been completed. It is used in two Job Chain Patterns - split and join and "Y".
The Join Job can only be used within a Job Chain and is only available for JobScheduler versions 1.11.4 and newer, See the How To Synchronize Job Execution Across Job Chains article for information about synchronizing Jobs in different Job Chains and for joining up parallel executing child Job Chain segments in JobScheduler versions 1.11.3 and older.