Private jets are not just for small groups of passengers. For groups from 20 to 300 people it is possible to charter a whole plane and fly to your own schedule. This is particularly popular with professional sports teams wanting to travel across the UK or into Europe to a big match, taking advantage of having the plane to themselves and flying to their own schedule.
Likewise a band tour with multiple destinations is a perfect role for a privately chartered jet allowing the aircraft to act as a 'tour bus' for the band members and their close companions.
Larger corporate groups may charter a jet for up to 300 people for a product launch or incentive exercise or conference. If required it is possible to brand the aircraft specifically for the event.