Here we are going to explain what is CrPC (Code of Criminal Procedure) section 10.
Subordination of Assistant Sessions Judges:
(1) All Assistant Sessions Judges shall be subordinate to the Sessions Judge in whose Court they exercise jurisdiction.
(2) The Sessions Judge may, from time to time, make rules consistent with this Code, as to the distribution of business among such Assistant Sessions Judges.
(3) The Sessions Judge may also make provision for the disposal of any urgent application, in the event of his absence or inability to act, by an Additional or Assistant Sessions Judge, or, if there be no Additional or Assistant Sessions Judge, by the Chief Judicial Magistrate, and every such Judge or Magistrate shall be deemed to have jurisdiction to deal with any such application.