In an ideal situation, every proposal would be submitted in writing and briefly introduced the first time it appears on the agenda. At the next meeting, after everyone has had enough time to read it and carefully consider any concerns, the discussion would begin in earnest. Often, it would not be until the third meeting that a decision is made. Of course, this depends upon how many proposals are on the table and the urgency of the decision. 
Clarify the Process
Present Proposal or Issue
Questions Which Clarify the Presentation
Contributors: C.T. Butler, Amy Rothstein
Recommended Books: On Conflict on Consensus