iPad Guided Access Passcode Setup

Hello, 
I've searched around and found no article or setting for a way to setup a profile on jamf to either disable Guided Access, Enable it or at least create a passcode for guided access. Would anyone know how this is done or if it is impossible. 
I essentially have over 500 devices begin managed and most like guided access but prefer to have 1 single passcode that so that others cannot change the passcode.
Kind Regards,