With a charter flight, you rent the entire aircraft, rather than just one seat. The aircraft can be large or small, and flights can be one-way or round-trip. The charter could be made on a flight-only basis, might include ground services such as transportation to or from meetings or could be part of a complete vacation package. Charter flights offer more flexibility than scheduled flights, with a wider choice of destinations and tailor-made itineraries.
You will be told how much the hold can take on your chosen aircraft and can upgrade if you feel more space is needed. This will generally be far more than that of a commercial airline. You may also need to upgrade if carrying things like golf clubs and skis. If travelling with a gun, you will need to provide a license and the gun and ammunition must be kept separate. It is then at the captain’s discretion whether it can be on board.