The Finish Passes dialog box displays the stock value left on the feature Floor after rough milling. This value is displayed for information purposes. It shows you how much stock you have to remove by finish milling.

You can set up the number of finish passes and the depth increments for each pass. For example, you can set up your finish passes as follows:

The tool will then make the first finish pass at an offset of .2 from the feature floor, the second pass at .1, the third pass at .05, and the final pass at 0.