A Keyboard Shortcut Tiddler is made of three parts:
key with a Keyboard Shortcut Descriptor as its valueIf the Keyboard Shortcut Descriptor has the form ((my-shortcut)) it's a reference to a configuration Tiddler that stores the corresponding Keyboard Shortcut
In order to make a shortcut editable through the Keyboard Shortcuts Tab in the $:/ControlPanel it's sufficient to create a tiddler $:/config/ShortcutInfo/my-shortcut, where the suffix is the reference used for the Keyboard Shortcut