Startup preset foreseen only manual switching. You can assign "Next mode" to some button. It will switch between Track, Buses and ACT (plug-in control). Auto switching is possible, but will need a small modification (I can provide an example if you want it, attach you current preset to replay so I modify it and you do not need redo the assignments). Note that for controlling plug-ins, read about "AZ ACT Fix" utility.
"ACT Speed dial" is another approach if you do not want permanent mapping.