1. Frame the issue, agree on what is to be decided.
2. Brainstorm and write all alternatives on a flipchart.
3. Allow participants some time to clarify their suggestions.
4. Let them select alternatives for consideration. (An optimal number is the total number of all suggestions divided by three.)
5. Go through all the suggestions and ask whether you should erase them or leave them in place. First ask about the alternatives with most votes. If someone strongly disagrees, let them make their case.
6. Where appropriate, suggest combining two or more ideas.
7. Summarise the final decision (or multiple alternatives) and divide the tasks. Once you have arrived at a true consensus, people will be eager to have their tasks assigned.
-jk-