Decrees in the Council of State shall, where necessary, lay down the terms and conditions for applying the provisions of articles L. 2123-2 to L. 2123-5. In particular, they specify the limits within which municipal councils may vote the increases provided for in article L. 2123-4 as well as the conditions under which these articles apply to the members of the deliberative assemblies and to the chairmen of the public establishments for inter-municipal cooperation, when they do not hold a municipal mandate.