So
What you saying is, I could use a i4 on the 4 gang switch, not connected to anything but power to the shelly itself, to send commands to the other switches
then on the others I could us like a shelly 1pm or shelly 2pm to connect the Line feed to the lights, and control them on the switch, or remotely from the i4 ?
but for example on my diagram, the 2 gang switches 1 and 2 control the same lights, dont I need to connect them in staircase mode ? or do I just use a single shelly and connect the two touchpads ?
Here is what I mean, is this how it should work ? (Image)