(61)The objective conditions for determining which of the economic operators party to the framework agreement should perform a given task, such as supplies or services intended for use by natural persons, may, in the context of framework agreements setting out all the terms, include the needs or the choice of the natural persons concerned. Contracting authorities should be given additional flexibility when procuring under framework agreements, which are concluded with more than one economic operator and which set out all the terms. In such cases, contracting authorities should be allowed to obtain specific works, supplies or services, that are covered by the framework agreement, either by requiring them from one of the economic operators, determined in accordance with objective criteria and on the terms already set out, or by awarding a specific contract for the works, supplies or services concerned following a mini-competition among the economic operators parties to the framework agreement. To ensure transparency and equal treatment, contracting authorities should indicate in the procurement documents for the framework agreement the objective criteria that will govern the choice between those two methods of performing the framework agreement. Such criteria could for instance relate to the quantity, value or characteristics of the works, supplies or services concerned, including the need for a higher degree of service or an increased security level, or to developments in price levels compared to a predetermined price index. Framework agreements should not be used improperly or in such a way as to prevent, restrict or distort competition. Contracting authorities should not be obliged pursuant to this Directive to procure works, supplies or services that are covered by a framework agreement, under that framework agreement.