HT5188: Apple Configurator: Using Volume Purchase Program (VPP) Redemption CodesLearn about Apple Configurator: Using Volume Purchase Program (VPP) Redemption Codes
What part of this:
Business customers can purchase volume licenses for Apple software directly from Apple by calling 1-800-854-3680 or through the Apple Store for Business at http://store.apple.com. Volume license contracts and maintenance agreements are available for all Apple products with a minimum quantity of 20 licenses.
seems to be problematic for you?