CAT/C/3/Rev.6 2. Subject to the fulfilment of the requirements referred to in paragraph 1 of the present rule, the Secretary-General shall provide the necessary staff and facilities for the effective performance of the functions of the Committee under the Convention. Rule 23 Statements The Secretary-General or his/her representative shall attend all meetings of the Committee. Subject to rule 37, he/she or his/her representative may make oral or written statements at meetings of the Committee or its subsidiary bodies. Rule 24 Servicing of meetings The Secretary-General shall be responsible for all the necessary arrangements for meetings of the Committee and its subsidiary bodies. Rule 25 Keeping the members informed The Secretary-General shall be responsible for keeping the members of the Committee informed of any questions which may be brought before it for consideration. Rule 26 Financial implications of proposals Before any proposal which involves expenditures is approved by the Committee or by any of its subsidiary bodies, the Secretary-General shall prepare and circulate to its members, as early as possible, an estimate of the cost involved in the proposal. It shall be the duty of the Chairperson to draw the attention of members to this estimate and to invite discussion on it when the proposal is considered by the Committee or by a subsidiary body. VI. Languages Rule 27 Official and working languages Arabic, Chinese, English, French, Russian and Spanish shall be the official languages of the Committee and, to the extent possible, also its working languages, including for its summary records. Rule 28 Interpretation from a working language Speeches made in any of the working languages shall be interpreted into the other working languages. 12