The comptroller shall be the custodian of the several funds provided for by this chapter. The comptroller may designate one of the deputy comptrollers to act in his place and stead at all meetings of the retirement board, and such designation shall be in writing and shall be duly filed in and remain of record in the office of the comptroller and in the office of the executive director of the retirement system. Such deputy comptroller shall possess any and every power and perform any and every duty at the meetings of such board belonging to the office of comptroller.