Open Space Technology, or Open Space as it is often called, is the most effective way I’ve found to get things done in groups ranging from a dozen or so people to several hundred. The approach is deceptively simple and consistently helps groups get more done in less time with far broader participation than most traditional meeting structures.
I’ve used the approach with hundreds of young people and adults coming together to develop paths for healthy youth engagement in a community; worked with dozens of HR professionals in a Fortune 100 company to explore innovative approaches to their work; helped university departments plan for the future and worked with many communities to engage residents and expand strengths in their communities. The world-wide Open Space community is very generous in sharing experiences and insights and you can learn more at: https://openspaceworld.org/wp2/what-is/
If Open Space sounds right for your organization or community, contact me to explore options.