I don't know if I'm getting something wrong here, or if the three die set for the .45 is much different than the regular 4-die set for the 9 mm, but in my 4-die set, the third die (which looks pretty similar to the one in the photo), the adjusting screw is to be used for adjusting the seating depth, and the crimp is adjusted by screwing in or out the body of the die.
I personally use the third die only for seating and use the 4th for taper crimping. I had to unscrew the die another full turn plus the three that the instructions say are needed, in order to prevent it from taper crimping my rounds. This way, when the bullet is seated I can still observe a little bit of flare on the case, which is then removed by the taper crimp performed by the 4th die.