is it possible to add a functionality for a second X-channel? So the first Y-channel is plot vs. the first X-channel and the second Y-channel is plot vs. the second X-channel.
Yes, its definitely possible but would require changes to the dialog and background engine which would not be trivial and those changes are out of the scope of this object. However, please feel free to take the source code and modify it to your liking so that it suites your needs.
