The apostles lay their hands on his head and ordain him and set him apart as President of the Church .
Invariably the successor has been the most senior member of the Quorum of the Twelve Apostles , with seniority determined by the longest continuous duration of service .
The apostles lay their hands on successor 's head and ordain him and set him apart as President of the Church .
Invariably the successor has been the most senior member of the Quorum of the Twelve Apostles , with seniority determined by the longest continuous duration of service .