Like the consensus conference, this method belongs to the category of citizen panels that combines prospective and deliberative approaches. In a first phase, 4 groups of local actors - residents, experts, decision-makers, and actors from the private sector - are brought together for a brainstorming session on two, three or four scenarios. They establish priorities and areas of consensus. In a second phase, the participants elaborate an action plan. The aim of the exercise is to evolve from a critical attitude to constructive collaboration.