31AA.—The Planning Regulator shall appoint such and so many persons to be staff of the Office as the Planning Regulator, subject to the approval of the Minister, given with the consent of the Minister for Public Expenditure and Reform, as to the number —and grade of those staff, from time to time may determine, having regard to the need to ensure that an adequate number of staff are competent in the Irish language so as to enable the Office to provide service through Irish as well as English.]