Meetings are not always effective. No clear agenda, no participation from the audience, and no decision after hours of meeting - these are just few things contributing to an ineffective meeting.
Imagine you are the leader of the meeting - would you let this happen?
Leading a meeting is about progressing towards a decision making, to come to a conclusion of what to do next. Aside from a clear agenda of why a meeting is needed, those in the room have their role to play. As participants, their ideas and thoughts do matters to the objective of the meeting.
Leading a meeting is about facilitating the thinking process and communication among all participants, including yourself.