Groups in zwavejs2mqtt basic question

Could someone please explain how to connect two devices; light dimmer and wall switch through zwavejs2mqtt dashboard? I am a noob and would like to do this without configuration files.

Node5 (the controller!) is supposed to turn Node3 (the dimmer) on and off.
I am sure this is extremely basic, please help me out!! :slight_smile:

Under the Groups of the device performing the action (Node 5), add an association on Endpoint 0, Group used for control and the node it should target. No association should be made the other way around (unless really needed).

This is my motion sensor (node 9) that turns on a switch (node 8):

Thanks for clearing up that one way association issue! It made it easier to identify the problem, which turned out to be the security level of the devices. By re-adding the controller with no security and associating to endpoint 2, it seems to work and represents the end of an 8 hour try and fail/search the internet nightmare! :slight_smile: