When a crisis occurs, people from different organizations, on different hierarchical levels have to deal with unexpected situations that require coordinated effort. The goal of this research is to improve multidisciplinary cooperation for crisis management teams. We developed a tool, the Multi-mono guide, which helps team members to share information at the right time, with the right person, in the right way. A pre-test post-test intervention experiment was conducted with 8 professional teams to evaluate the effect of the tool on individual competencies, team situation awareness and process satisfaction. The experimental group was more satisfied with the meetings and about the way they shared information. Participants reported that the Multi-mono guide makes them aware of sharing information. We didn’t find significant differences for individual competencies and team situation awareness. This is may be because the teams that participated were very experienced. Participants did find the Multi-mono guide useful for trainees.