ETS 108 – Automatic Processing of Personal Data, 28.I.1981 __________________________________________________________________________________ c shall formulate its opinion on any proposal for amendment of this Convention which is referred to it in accordance with Article 21, paragraph 3; d may, at the request of a Party, express an opinion on any question concerning the application of this Convention. Article 20 – Procedure 1 The Consultative Committee shall be convened by the Secretary General of the Council of Europe. Its first meeting shall be held within twelve months of the entry into force of this Convention. It shall subsequently meet at least once every two years and in any case when one-third of the representatives of the Parties request its convocation. 2 A majority of representatives of the Parties shall constitute a quorum for a meeting of the Consultative Committee. 3 After each of its meetings, the Consultative Committee shall submit to the Committee of Ministers of the Council of Europe a report on its work and on the functioning of the Convention. 4 Subject to the provisions of this convention, the Consultative Committee shall draw up its own Rules of Procedure. Chapter VI – Amendments Article 21 – Amendments 1 Amendments to this Convention may be proposed by a Party, the Committee of Ministers of the Council of Europe or the Consultative Committee. 2 Any proposal for amendment shall be communicated by the Secretary General of the Council of Europe to the member States of the Council of Europe and to every non-member State which has acceded to or has been invited to accede to this Convention in accordance with the provisions of Article 23. 3 Moreover, any amendment proposed by a Party or the Committee of Ministers shall be communicated to the Consultative Committee, which shall submit to the Committee of Ministers its opinion on that proposed amendment. 4 The Committee of Ministers shall consider the proposed amendment and any opinion submitted by the Consultative Committee and may approve the amendment. 5 The text of any amendment approved by the Committee of Ministers in accordance with paragraph 4 of this article shall be forwarded to the Parties for acceptance. 6 Any amendment approved in accordance with paragraph 4 of this article shall come into force on the thirtieth day after all Parties have informed the Secretary General of their acceptance thereof. Chapter VII – Final clauses Article 22 – Entry into force 1 This Convention shall be open for signature by the member States of the Council of Europe. It is subject to ratification, acceptance or approval. Instruments of ratification, acceptance or approval shall be deposited with the Secretary General of the Council of Europe. 7