To make the WLM couple data set available to the sysplex, you can use the SETXCF command. Remember that you still need to update your COUPLExx member as shown in Updating the COUPLExx member so that any subsequent IPLs will automatically pick up the WLM couple data sets.
For more information about using the SETXCF command, see z/OS MVS System Commands.
SETXCF COUPLE,TYPE=WLM,PCOUPLE=(SYS1.WLMCDS01,TEMP01)
SETXCF COUPLE,TYPE=WLM,ACOUPLE=(SYS1.WLMCDS02,TEMP02)