9(iii) appointments to one half of the vacancies arising in the post of Asst.Managers and above, except in case where there is only one post in the category, shall be made by promotion and to the remaining vacancies by direct recruitment on 1:1 ratio, provided that, if the Board so decides, in particular cases, the vacancy/vacancies to be filled up by direct recruitment can be filled up by transfer or deputation of officers holding similar posts in other financial institutions or Govt. However, the Board may be resolution decide to make appointments by promotion to a vacancy or vacancies to which appointments are to be made by direct recruitment, if the Board thinks that such deviation from the prescribed ratio is necessary for administrative efficiency or convenience. In cases, where there is only one post in a category, the vacancy arising in that post can be filled up by promotion or direct recruitment or deputation, according to the decision to be taken by the Board, as and when the vacancy arises.