Either select your factory ammo from the list on the program on the Swarovski site or input bullet data and Fps if you're a reloader.
You then do your first "zero" as normal. You choose what the next three increments are (I use 50 metres), dial in the relevant number of clicks from the program and set the indicator ring, then repeat for the next two.
I have a 100m zero with 150m, 200m and 250m settings.
Checks out OK on a range.
Means I don't have to holdover on the hill. Also useful on foxes at range.
Stan