Donald,
I have a Metrolux II that has a probe much like the zone 6. If I could find the instructions I would copy them and email them to you. Essentially it is lay the probe near the work to be exposed and turn on the timer. I wish I could be more specific but that is all that I remember. Hell, try it and see what happens that way. I would set it up and then make a test strip noting where the timer is at each strip and then set the timer for the strip I liked and see what happens. If that works to your satisfaction then to figure the dry down I would make a strip at 5% less 7% less and 10% less and see which one looks the best. That will be the dry down time used only for the final prints. My problem is remembering to turn on that feature.

lee\c