A charrette involves significant resources. The chief items are sufficient space and background materials and an experienced leader. Graphics must be used so that participants quickly comprehend the problem and envision alternative solutions. Background materials must be available at the start of the charrette so that no time is lost in investigating the problem. Preparatory work leading to a charrette is intensive, whether done in-house or by an outside specialist.
Organization depends on the issue 's complexity and the intended length of the event.
A minimum of four hours is essential for a charrette focused on a modest problem. A charrette occurs at any time in a planning process, but preparation is crucial. Advance work can take a month or more, depending on the issue to be discussed. Charrette materials are flexible and should be tailored to the focus of the meeting. A charrette combines effectively with other tech niques.