While the formal function of head of state is vested in the single person of the Sovereign, the larger social role of the royal family is spread over more members of the royal family. Each royal, notably the children and siblings of Monarch and heir (Prince of Wales), has his/her own staff, profile and social agenda, typically hundreds of public appearances a year, such as visits, inaugurations, patronages of charities, and still they have to turn down more offers. It's a job for which there is no training, except on the job (or accompanying a veteran), and at the same time lonely -Prince Charles regrets he has to leave people by the time he gets them at ease with seeing him as a 'regular mortal'- and always preyed at by the media, which are also their main tool to work on the public raising funds and awareness.
—KGF Vissers