Basically, you are trying to add an effect to a pattern?
Try to move the pattern in the mixer to an "insert" slot. Then click on that insert. To the far right of the mixer, you will see where it is labeled 1 thru 8 with arrows to the right of the numbers. Click on the arrow and go to presets. and find effectrix. Hopefully this helps.
Also are all the drum pieces separate patterns? If that is the case, there is a little green light in the pattern area the indicates pattern selected. Click on each pattern to turn on this light one at a time. while the light is on that pattern, link it to effectrix.