Keep passes from appearing on the Lock screen. Go to Settings > Passcode and tap Turn Passcode On. Then under Allow Access When Locked, turn off Passbook. For passes with notifications, to keep a specific pass from appearing on the Lock screen, tap the pass, tap 
, then turn off Show On Lock Screen.
Set notification options. Go to Settings > Notification Center > Passbook.
Include passes on your other iOS devices. Go to Settings > iCloud and turn on Passbook.