The primary responsibility of an Airport Ground Staff is to ensure the smooth operation of ground services at the airport. This includes assisting passengers with check-in, boarding, and baggage handling, as well as coordinating with other airport staff to ensure timely departures and arrivals. Key responsibilities of Airport Ground Staff include greeting passengers, checking tickets, tagging luggage, and directing passengers to their designated gate. They must also be able to handle any issues or complaints from passengers in a professional manner.