CAT/OP/3/Rev.2 Rule 25 Duties of the Secretary-General 1. The Secretary-General shall be responsible for undertaking all necessary arrangements for the sessions and work of the Subcommittee, as decided by the Subcommittee and recorded in sessional lists of decisions. 2. Officials of the Secretary-General shall attend the sessions of the Subcommittee, participate in its visits, provide technical and substantive assistance and advice to the Subcommittee in fulfilling its mandate, and may support other official engagements of the Subcommittee, including participation in deliberations, as appropriate. 3. The Secretary-General shall prepare and submit to the Subcommittee all working documents in advance of its sessions to enable the Subcommittee to address all items of the provisional agenda and to carry out its work effectively. The Secretary-General shall provide the Subcommittee with all the information that it needs to fulfil its mandate effectively. Rule 26 Financial implications of proposals 1. The expenditure incurred by the Subcommittee in the implementation of the Optional Protocol shall be borne by the United Nations. 2. Before the Subcommittee approves any proposal involving expenditure in excess of that already approved by the General Assembly, the Secretary-General shall, as early as possible, prepare and circulate to the Chair of the Subcommittee an estimate of the cost involved in the proposal, indicating the additional expenditure. VIII. Correspondence Rule 27 Incoming and outgoing correspondence 1. The Secretary-General shall bring to the attention of the Subcommittee, through its appropriate officers, all correspondence requiring the consideration of the Subcommittee. The Secretary-General shall also be responsible for informing the Subcommittee, through its relevant officers, of any issues brought before it for consideration or any other developments that may be of relevance to it. 2. Correspondence received by members of the Subcommittee that relates to the mandate of the Subcommittee shall be forwarded to the Secretary-General and shared with other members of the Subcommittee, as appropriate. 3. The Secretary-General shall keep a record of all correspondence relevant to the mandate of the Subcommittee and shall, when appropriate, send an acknowledgement of receipt. 4. The Secretary-General shall store correspondence relevant to the mandate of the Subcommittee as decided by it. 5. The Secretary-General shall make available to members on request, all correspondence relevant to the work of the Subcommittee. Rule 28 Informal meetings with States parties The Subcommittee shall hold informal meetings with States parties during its plenary sessions from time to time. 10