Generally this kind of work is done in small groups, has a clear timescale, and an end product such as a joint document, a website, a plan. For the group work to go well, it needs everyone's participation and commitment, and a feeling of shared responsibility.
This type of activity needs planning and co-ordination, such as
Someone, or maybe several people, needs to take on the responsibility for facilitating this process, like making sure decisions are made and timetables kept to. Everyone needs to take responsibility for doing their bit of the work and for keeping to any policies or rules the group has agreed.
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