is the fixture in M-Series is a (dot)fixture or a single fixture.
Wave Per or Step Per can only be applied accross fixtures>
if you have a single fixture with 4 intensity you will have to do it manually
in the FX timming, go to the second page , there's a DELAY paramater.
Int1 = 0%
Int2 = 25%
Int3 = 50%
Int4 = 75%