When a job should be set as critical

You should always set a job as critical if its delay could imply a delay in the plan. WLM knows the availability of the overall resources against the system workloads when the current plan is executed and the real duration of a job is determined by this factor. Therefore, it is better also that you set as critical those jobs that would be on a critical path if their estimated durations were only minimally longer than at present. To set a job as critical, you have to enter Y in the CRITICAL field on the JOB, WTO, AND PRINT OPTIONS panel (accessible from either the APPLICATION DESCRIPTION panel or the MODIFYING THE CURRENT PLAN panel).