The commissioner may delegate such of his powers and authority to his deputies as he may deem necessary for proper administration of the division and may designate appropriate titles for his deputies and any of his employees. Any such delegation or designation made may be rescinded by the commissioner at any time. All such actions shall be in writing and of record in the files of the division. The acts of deputies performing such delegated powers and authority shall be of the same legal effect as if performed personally by the commissioner.