Meeting Groundrules
I always liked something like this.
Meeting Ground Rules Respect Your Colleagues! It’s ok to disagree, respectfully and openly. Silence is consensus, please speak up with concerns! Listen as an ally and with an open mind. Only one person speaks at a time. Honor the limitations of time, speak concisely. If you state a problem, try to offer a solution. If you have a comment a bit off topic but you want addressed , write it down for a possible follow up meeting.