By adjusting two outside screws you can adjust the grind to square but even better if you loosen the two screws you can grind a camber on the cutter. How much camber depends on how much you back off each screw. With the screws fully backed off it will not grind a scrub plane camber but does a very nice Jack plane camber and with a slight back off of each screw you can grind to a perfect camber for finish planes.
The SE-77 jig combined with a 10' CBN wheel makes me want to keep my Tormek.
Here is a photo of a max camber iron using the SE-77 jig.