Section 525(g) in Civil Court Rules of the High Court of Judicature at Patna
(g)A Vakalatnama or Mukhtarnama, which has been filed in Court may, subsequently, with the permission of the Presiding Officer, be accepted by a person whose name appeared in it at the time when it was filed. In the case of such subsequent acceptance an endorsement shall be made as in the case of the first acceptance.