In the Main Playback, I have a preset where there are a bunch of VL's at level Full, On Seq2, I have an intensity chase (made up of several presets) assigned to those VL's. Bringing up the Master (assigned to Seq2) doesn't do anything becuase the level is at full already. So what I have to do now is make another preset (in Seq1) to take the VL's to zero, than bring up the Master (Seq2). If I can set a priority, than bringing up the Master (Se2) would over-ride the Main Playback. Bringing the fader down would restore.
MZ