Welcome Eglarion!
In case I understand that question, you are looking for equivalent of "Next/Previous Track Bank". Have you seen "ACT MIDI Explained" tutorial already? Starting from "AMC Rotaries and Sliders" chapter, I explain how it works. But in case it is too "cryptic", I can try to describe it in other words here.
In normal SONAR plug-ins you control predefined block of strip (tracks or buses) only. The "width" of the block is either configurable (for Generic Surface plug-in) or constant (8 for ACT MIDI plug-in). "Move the block" to next strips is logically make sense.
In my plug-in, you can simultaneously control arbitrary strips, including different strip types (for example, 1st and 2nd track, 2 WAI tracks, 6th bus and 3 WAI buses). There is no fixed block to which you are bound. So there is no "move that block" as a separate command.
As explained in the tutorial, it is possible to imitate "normal" blocks by using WAI based strip references ("Track WAI +0", "Track WAI +1", and so on). Than action combination "Strip Track <First in WAI> +8" "WAI (Old width for all types)" will "move" that block (shift is "+8"), effectively implementing "Next Track Bank".
Well... While I like my plug-in, I know the trues... It is far more complicated than "ACT MIDI" setup panel. See chapter 40 of SONAR Reference Guide and my "ACT MIDI Explained". The "power" of my plug-in is not in simplicity but in flexibility
If you have more questions about any plug-in (not only my) or SONAR+MIDI in general, I can try to answer them. I am Russian, so by "welcome" I really mean welcome