The buses will be parked on the right side when facing Lonza's Main Lobby entrance. The buses will be parked along the road, the buses are not parked according to their signage number. Check your boarding pass to match with the bus signage number before boarding the bus. Do not worry, the bus driver will have a list of passengers and will be able to help you double check if you belong to that bus.
Below is the bus waiting area ( The black arrows represents the buses waiting at Lonza)