Hi Reg --
There are two kinds of organ voices: Regular organ voices that use sampling (like other regular voices) and "Organ Flutes" (drawbar) voices.
Please try this. Hit the "HOME" gateway button. Select "WhiterBars JS" in RIGHT1. Touch "Voice Edit." You should see the Voice Edit page which is shown for all regular voices. WhiterBars JS is a regular voice.
Hit the "HOME" button, again. Select "JazzStandard" in RIGHT1. Touch "Voice Edit." You should see the Voice Edit page which is shown for Organ Flutes voices, i.e., the page with virtual drawbars. JazzStandard is an Organ Flutes voice.
Hit the "HOME" button, again, and look at what is shown for RIGHT1. You'll see a little drawbars icon beneath the name "JazzStandard." Touch the icon and you should go directly to the Voice Edit page with virtual drawbars. This icon is shown for all Organ Flutes voices and is a shortcut to the drawbars page.
Hope this helps -- pj