Each time the crusher receives a controller like MIDI Data, Joystick movements or Plugin Parameters it will be displayed in this panel.

Alternatively you can choose a default controller by pressing the choose button. Depending on the type of controller one or several properties of this controller can be adjusted by entering them into the channel or value fields.

Note: Regarding MIDI NoteOn/NoteOff you can easily select the range by pressing one key and then while holding down this key pressing another key on the keyboard. Releasing the first key will end up in setting a note range.