Step Two - Set jOrgan Manual to USB Keyboard
Now you need to tell jOrgan which of its three manuals—Choir, Great and Swell—or its PedalBoard is going to be played on the MIDI keyboard you have just connected. In the jOrgan window’s File menu click Customize... in the drop down list. e Customize Keyboards window appears, Fig. 4.4.
Fig . 4 .4 - Customize Keyboards Window