law: Pension’s Act, 1871
  15. Power of Central Government to make rules 
  
  
  The Central Government may, by notification in the Official
  
  Gazette, make rules to provide for all or any of the following matters,
  
  namely:-
  (a) the manner and form in which any nomination may be made
  
  under section 12A and the manner and form in which such nomination may be
  
  cancelled or varied by another nomination;
  (b) the manner in which provision may be made, for the purposes
  
  of the second proviso to section 12A, in any such nomination for conferring on
  
  some person other than the nominee the right to receive moneys payable to the
  
  nominee if such nominee predeceases the pensioner.