Article 21 — Work programmes

1. The Programme shall be implemented by work programmes as referred to in Article 110 of the Financial Regulation. Work programmes may be multiannual, when appropriate. Work programmes shall set out the actions and associated budget required to meet the objectives of the Programme and, where applicable, the overall amount reserved for blending operations. 2. The Commission shall adopt work programmes by means of implementing acts. Those implementing acts shall be adopted in accordance with the examination procedure referred to in Article 77(4). 3. The work programmes shall include in particular: (a) the overall amount of the Union contribution to each type of action referred to in Article 10(1) and a detailed description of each type of action; (b) with respect to actions referred to in Articles 11 and 12, the minimum financial size of the actions; (c) with respect to actions referred to in Article 12, the maximum number of legal entities forming part of the consortium, which shall not exceed 15 legal entities; (d) the procedure for the evaluation and selection of proposals, including, where relevant, a description of the milestones, designed in such a way as to mark substantial progress in the implementation of actions, the results to be achieved and the associated amounts to be disbursed, as well as the arrangements for the verification of the milestones, the fulfilment of conditions and the achievement of results; (e) the overall amount of the Union contribution to joint procurement with the support of the Commission as referred to in Article 15(1), point (a), Article 15(3), Article 16 and Article 17; and (f) the methods for determining and, where applicable, adjusting the funding. 4. When adopting work programmes, the Commission shall take into account the need for coherence with other relevant Union programmes and instruments. 5. The financial envelope referred to in Article 3(1) may cover joint procurement as referred to in Article 15(1), point (a), which shall not exceed the parts of the contract on non-recurrent costs, including the reservation of manufacturing capacities.