law: Indian Trusts Act, 1882 
  73. Appointment of new trustees on death, etc . 
  Whenever any person appointed a trustee disclaims, or any
  
  trustee, either original or substituted, dies, or is for a continuous period of
  
  six months absent from 3[India], or leaves 3[India] for
  
  the purpose of residing abroad, or is declared an insolvent, or desires to be
  
  discharged from the trust, or refuses or becomes, in the opinion of a principal
  
  civil court of original jurisdiction, unfit or personally incapable to act in
  
  the trust, or accepts an inconsistent trust, a new trustee may be appointed in
  
  his place by- 
  (a) the person nominated for that purpose by the instrument of
  
  trust (if any), or
  (b) if there be no such person, or no such person able and
  
  willing to act, the author of the trust if he be alive and competent to
  
  contract, or the surviving or continuing trustees or trustee for the time
  
  being, or legal representative of the last surviving and continuing trustee, or
  
  (with the consent of the court) the retiring trustees, if they all retire
  
  simultaneously, or (with the like consent) the last retiring trustee.
  Every such appointment shall be by writing under the hands of
  
  the person making it. On an appointment of a new trustee the number of trustees
  
  may be increased.
  The Official Trustee may, with his consent and by the order of
  
  the court, be appointed under this section, in any case in which only one
  
  trustee is to be appointed and such trustee is to be the sole trustee.
  The provisions of this section relative to a trustee who is dead
  
  include the case of a person nominated trustee in a will but dying before the
  
  testator, and those relative to a continuing trustee include a refusing or
  
  retiring trustee if willing to act in the execution of the power.