You can use the VARY WLM command to activate a named service policy for a sysplex. The service policy must be defined in the workload management service definition and must have been previously installed on the WLM couple data set.
You can also activate a workload management service policy by using the online ISPF administrative application. Refer to z/OS MVS Planning: Workload Management for more information or see your service administrator.
This command activates the named service policy on all systems in the sysplex.
For complete information on how to use the VARY command to activate a workload management service policy, see Activating a service policy.