19.—(1) Where, immediately before the relevant date, any officer has not taken up the duties of his employment he shall be deemed, in the application of article 17 or 18, to be discharging such duties, and to be employed in connection with the area of housing accommodation at which he would be employed if he had taken up such duties.
(2) Where any officer is, immediately before the relevant date, absent from his normal duties for the purpose of undergoing training, article 17 or 18 shall apply—
(i)if it was part of the arrangements under which he is so absent that at the completion of such training he should be employed in a place, situation or employment different from the place, situation or employment which he occupied prior to the commencement of the training, as if he was, immediately before the relevant date, occupying such different place, situation or employment;
(ii)otherwise, as if he was, immediately before the relevant date, occupying the place, situation or employment which he occupied immediately prior to the commencement of such training.
(3) Where any officer is, immediately before the relevant date, absent from his normal duties otherwise than for the purpose of undergoing training he shall be deemed, in the application of article 17 or 18, to be discharging such duties, and to be discharging them in connection with the area of housing accommodation at which he normally discharges them.