When a problem is posed that requires a solution,  group members should: 

• Say whatever comes to mind
• No one may criticise or even comment on anyone else’s idea, but  you may use it to think of associated ideas
• Anything goes, everything is acceptable and is written down - there are no right or wrong suggestions - stress the need for lots of ideas no matter how silly they may seem
• encourage people to let their ideas flow without judging first whether they are good enough to say first
• praise shy people for speaking up
• it may go slowly at first if people are not used to this but it will soon warm up
• At the end of the brainstorm the items are evaluated and the most impossible ones are crossed out once the originator of the idea has had a chance to try to explain the thought behind it. This often helps express the idea better and leads to solutions.
• best options are prioritized (putting important ones first and less important ones lower down)
• Finally choose the ones that the group thinks will work and decide on ways to put them into practice.