(94)Wherever the quality of the staff employed is relevant to the level of performance of the contract, contracting authorities should also be allowed to use as an award criterion the organisation, qualification and experience of the staff assigned to performing the contract in question, as this can affect the quality of contract performance and, as a result, the economic value of the tender. This might be the case, for example, in contracts for intellectual services such as consultancy or architectural services. Contracting authorities which make use of this possibility should ensure, by appropriate contractual means, that the staff assigned to contract performance effectively fulfil the specified quality standards and that such staff can only be replaced with the consent of the contracting authority which verifies that the replacement staff affords an equivalent level of quality.