ok I think I found how.
zooz zen72 support direct association according to https://www.getzooz.com/downloads/zooz-700-series-z-wave-dimmer-zen72-manual.pdf
then I take this custom driver [DRIVER] Zooz ZEN Switches Advanced (and Dimmers) and it expose the group2 and group3 thing that zooz manual refers to.
from what I can see, I can only do direct association for up to 5 devices. per group? so 10?
and that's the device ID
I only did changes on the dimmer NOT having the load and it works. both dimmers can turn on and off the light. according to zooz documentaion, group3 carry dim level too. and it works. if I hold the ON button on the dimmer without load, the light slowly dims.
awesome!
