Ind. Code § 27-1-3-21
All rules, regulations, notices, orders, deeds, assignments and other instruments or documents issued, executed or promulgated by the department shall be executed in the name of "the department of insurance," on its behalf, by the insurance commissioner, or, in case of his absence or disability, by a deputy insurance commissioner, and shall be sealed with the official seal of the department; but the commissioner may authorize the execution of such deeds, assignments, releases, petitions, notices or any other instruments or documents issued or executed by the department in connection with the rehabilitation, liquidation or conservation of any insurance company by such department in the name of "the department of insurance," by any special deputy commissioner duly appointed in charge of rehabilitation, liquidation or conservation of any insurance company; and all such documents so executed by the special deputy insurance commissioner need not bear the official seal of the department.
IC 27-1-3-21