On Windows, you can use the ctgservice command to register Gateway daemon startup override options and the cicscli -r command to register startup override options for the Client daemon.
Startup override options specified are checked when the IBM® CICS® Transaction Gateway service starts. The options are written to the Windows Application Event log.
Use the ctgservice command to specify options to override Gateway daemon parameter values specified in the configuration file. For more information, see the ctgservice command reference.
Use the cicscli -r command to specify Client daemon startup options. For more information, see Setting startup override options.