During the charrette a new future proposal is developed in common, e.g. in various forms of workshops. The charrette must be carefully planned, and the method is concluded with a finished proposal. This method is very efficient for making quick decisions, but it is not adjusted to Swedish planning. If the team has overlooked an aspect that is important to one party to the case and this party subsequently dispute the plan, the charrette must be repeated. The advantages are numerous, but above all a fruitful dialogue and a good cooperation between all involved are developed. (de Laval, 1999)
Those methods are used when stakeholders are deeply engaged in the planning process. It is important not to promise too much, but to state clearly what mandat the stakeholders have and how their opinions will be respected. Confidence is not easy to build up, but very easy to destroy.