It's highly recommended you use the follow settings for your iPad. These options ensure the best experience for your staff and ensure a stable updating process.
Note: If your iPad is used you'll want to perform a factory reset so previous apps or settings don't interfere with store operations.
Turn on your iPad
Click on the gear icon to access your iPad settings
Under "Passcode", turn off the iPad's passcode lock. Using a passcode on the iPad will slow the register down considerably.
Under "Wallpapers Brightness" turn up the brightness and turn off Auto-Brightness.
Under iTunes App Store, turn off automatic downloads for Apps and Updates. This will prevent updates to Green Bits from automatically installing. You'll want to control when Green Bits is updated so you have time to train your staff.