For further info on BIM Lead Meetings, check out this posting: Running a BIM Lead Meeting
Here are my Golden Rules for running a Collaboration Meeting.
Values everyone time and allow them the opportunity to contribute to the meeting regardless how minor the issue may seem. these meetings are a great opportunity to address these minor issues before they develop into larger issues.
Taking a short bathroom break is a good way to put a topic to bed and move on.
Facilitating the meeting means that you set the tone for the meeting, direct the conversation and have the ability to stimulate the discussion. Use the agenda as a road map but don't be afraid to explore the side roads as the meeting requires, you never know where they're going to lead and if they go too far into the woods bring it back on track. :-)