Looking at src/doctor/doctor.cpp, the kscreen-doctor command supports a lot of stuff, but “panning” isn’t one of them.
Generally, you can run kscreen-doctor --outputs to get a detailed report about all the features that kscreen-doctor supports, and their values for each connected output, and you should be able to affect any of these features but not anything else.
I understand you are running on X11, but KDE development is currently focused on Wayland support and I don’t think that the KWin Wayland compositor supports panning - so adding that feature would be the best way to move forward.