The Department of Human Resources, through appropriate divisions, subdivisions and offices, shall have the power to perform and responsibility to perform all the powers, duties and functions that were vested in the Human Resource Management and the Benefits and Insurance Administration Sections of the Office of Management and Budget prior to July 1, 2017, and which are not otherwise specifically assigned to the Department of Human Resources by this chapter, excepting only those powers, duties and functions expressly vested in or retained by any other person, department, board, commission or agency.