I.-When a grouping of orders is set up between communes that are members of the same public establishment for inter-communal cooperation with their own tax status or between these communes and this public establishment, the communes may entrust this public establishment, free of charge, by agreement, if the articles of association of the public establishment expressly so provide, independently of the functions of coordinator of the grouping of orders and whatever the competences that have been transferred to it, with the responsibility of carrying out all or part of the procedure for awarding or executing one or more public contracts in the name and on behalf of the members of the grouping.
II.
II.-When a grouping of orders is set up between communes located on the territory of the Lyon metropolitan authority or between these communes and this metropolitan authority, the communes may entrust to the latter, free of charge, by agreement, independently of the functions of coordinator of the grouping of orders and whatever the competences available to the metropolitan authority, the responsibility of carrying out all or part of the procedure for awarding or executing one or more public contracts in the name and on behalf of the communes that are members of the grouping.