A thought only.... In a jam with 3 musicians or more, would it be possible to, say, kick the the 3rd musician part but keep the 4th part and so on, so that one could add a new third's part and keep the 4th and so on?

If you kick the third part as it is now you loose everyone after, some jams I would like to keep everyone after and replace only the one part with my own. Clear as mud right? Only a thought...