KlipperScreen adjust existing menu

Hi,

Is it possible to add buttons to existing menus using the config file?
Readthedocs seems to suggest you can add your own menus, but doesn’t seem to cover modifying pre-defined ones.

Specifically, i would like to add a “cut” button on the extrude panel to trigger a filament cutter (i am thinking ahead to what would be required for installing CoPrint3D’s Chromahead whenever they might ship)