Hi kokeric,

Unfortunately, these plug-ins do not support that functionality.  An option would be, however, to use the snapshots feature to create the different harmonies you would like to use and use a midi track with program change messages to switch between them.  Another option would be to use automation, but that would have to be programmed on a per voice basis.

I hope that helps, let me know if I can be of any further assistance.

Dan