The board of directors makes sure this happens with the general meetings, SIGs, and every regularly scheduled and special event. The board also makes sure that everything necessary to actually run the group gets done. There are arrangements to be made for facilities, decisions to made about presenters, records to be kept, work to be done. The directors meet each and every month to take care of all the nitty-gritty details. Some issues flow on by with no discussion.
Some cases have major disagreements as to how to go about a certain decision.
But, all of the arguments and discussions are handled with friendliness and decorum. The President is the most critical position on the board of directors. This is where the buck stops. This position comes with the possibility of all the presidential responsibilities. The Secretary has a wide variety of record taking and record keeping duties.