To add to the above, what the staff member who wrote this driver told us is that the Hue Dimmer doesn't send separate events for multiple, successive(-ish) pushes of the "On" (first) button, so the Hue Bridge must be using software trickery to count these and act accordingly. Someone asked recently about how to do this with a Pico remote--and you can do that using similar software trickery on Hubitat. 
The actual button device doesn't really matter, so what I wrote there might help you here:
Just a specific example of something mentioned above (plus an app I wrote to help me do this if you're interested in that, but it's also possible in Rule Machine).
