You can use the CONTROL V command to direct commands from a console to a specific system in a sysplex. The CMDSYS parameter on the CONTROL V command specifies which system receives all commands (not specifically routed elsewhere by the ROUTE command) entered from a particular console. See CONTROL command.
You can use the ROUTE command to send commands to be processed on other systems in the sysplex. See ROUTE command.
You can use the VARY CN command to specify from what systems in a sysplex a specified console receives unsolicited messages. Use the MSCOPE, AMSCOPE, and DMSCOPE parameters for purposes of control. See VARY CN command.
Some commands have an L=name parameter. You can use this parameter to specify the name of a console on a different system in the sysplex. These commands can communicate with the named console and receive messages from that system.