Kristin, you can actually move the layers around in the order that you'd like. The videos give a pretty good example of how that's done. I also agree with Bill, that is an excellent part to use a 3/16th centercutter endmill and that would be it. Since the last step would be to cut the outside profile out, I usually leave a little "web" at the bottom so that when the cut is complete, it doesn't "break" loose on you and flop around. Then it's nothing to just clean the edge up after pulling it off the table.
I still want to learn how to use the TABS function but haven't yet tried that.