Not complicated at all. Contact print the Step Wedge onto 6 or so sheets of TMY. Develop each sheet at different times on PYROCAT HD. Once dry, measure each step in each sheet for density, using the proper channel to read PYROCAT negs. Input them onto the program. So, with 6 sheets you will have 6 columns of varying ranges. I have not used the program in over 8 years (mainly because I no longer need it) but I believe that this is all it needs to generate the various reports.