Currently I think you can’t set values on other devices from a edge driver, even though the devices are paired on the same driver. I don’t know if it could be done with edge LAN devices through the API, I’m lost on that.
It could be done with a smartApp, but groovy smartApps will go away and it’s not worth spending time on.
If what you need is to establish with routines fixed values of color temperature and level in several bulbs:
- You can create scenes that set those values on needed bulbs
- Make routines that execute those scenes when they are needed or you can also execute those scenes manually whenever you want.
If you need to step down or step up the level and/or color temperature on multiple bulbs:
- You can create scenes that set the increase or decrease per step using the capabilities level by external steps and color Temperature by external steps.
- Create routines to run those scenes or run them manually or with a multiple button by pairing each button action with a scene.
You could use the Zigbee Groups with zigbee multi button remotes, but I have no practice in that. There is information about that in other Threads