What would you like to know about it?
On my Ofna Automatic I bolt the tire to the arbor, use the tire depth adjuster to cut what I want off it. Press the on switch to spin the arbor, press my direction button (or hand crank depending on your model) and off I go. My first pass is my rough cut to make sure its the correct size, my second back pass touches it up and my third and fourth pass (second cycle) are my final cuts. Once I get the proper depth I want I'll true a few more tires and call it a day. You may want to consider having a caplier laying around just to be sure your not cutting those tires to the wrong size therefore costing yourself a new set of tires if there too low.
Its important not to touch your depth adjustor once you lock in your desired mm/inch cut. Reason being is that you do not want one tire at say 56mm and another at 57mm (unless your doing this for say tire wear rates)
After I'm done truing my tires I take a file and round off the edges of the tires a bit.
Here's a video I found on youtube
, this is merely for reference.
I hope that helps you abit! Best of luck with it.