Steps incidental to the establishment of a suhsidiary organ: appointment of members, terms of reference, interpretation of terms of reference, rcference of questions for study, approval of rules of procedure. However, the approval of the terms of reference of such subsi<liary organs should require the unanimity of the permanent members if the subsidiary organ were given authority to take steps which, if taken by the Security Council, woukl be subject to the veto, or if the conferring of such authority would constitute a non-proce<lural decision.