Nue Zigbee scene switch (used as a 2 way light switch) & double power point drivers

I am getting the lights installed today. Can you advise the steps you used to map/bind the switch that's not hard wired to another switch that is wired in. I can use rule machine to create a basic rule but you mentioned you used Virtual Device sync. Do you mean this: Virtual Device Sync ? if so can you walk me through the steps.