So the Zigbee bulbs will go to any dim level, just set the Unit to the desired dim level. Anything from 1% to 100%.
Let me know how ZIM 15.03 goes. I just sent you 15.01, which seems to be working for me. I might have the versions mixed up but i thought I tried 15.03 without success. I need to log all these versions better because Leviton certainly doesn't.
Did they send you 15.03 or did you get it from the Zigbee Updater? I have ever yet to get a new version in the updater, and I just downloaded the latest updater.
I do not see support for Zigbee motion sensors, but if i had to take a guess, I'd guess it is because the panel is UL certified, and my guess is they never bothered to get it UL certified for Zigbee sensors since they don't even sell any Zigbee sensors.
If you have a Zigbee motion sensor, you could try to learn it as a "unit" and see if it makes the unit go on and off when its triggered. It may work. I have been meaning to try that.
Another option is just get either the Leviton Wireless receiver or the GE Wireless receiver and connect it to your panel. then you can get motion sensors and use them for the alarm and lighting. I use the GE receiver 42A00-2. Then you can use these motion detectors:
http://www.amazon.com/Interlogix-Wireless-Indoor-Detector-60-807-95R/dp/B00070LZ5W
And these work for the alarm and lighting,