When the shortcut table is currently visible, type the "KeyCue Settings" shortcut at the end of the list or click this item. If this does not work, locate the KeyCue application icon in the Finder and double-click it. This will launch KeyCue if it is not yet running; the KeyCue icon will briefly appear on the screen. When KeyCue was already active in the background, double-click its icon to open the settings window instead.
You can also define a custom trigger by quickly opening the settings window.