1. Every meeting should have an agenda in the invite. I know some folks go as far as ignoring meetings that don't have one. 2. One person should own and drive

1. Every meeting should have an agenda in the invite. I know some folks go as far as ignoring meetings that don't have one. 2. One person should own and drive the meeting. 3. Intention of every meeting should be producing some kind of result: action items, decisions made, people responsible, dates & milestones, etc. Based on the short description you provided it sounds like nobody owns/runs the meeting. If that's your responsibility (or you choose to make it yours) then keeping people on track is your job. You shouldn't feel like an ass for doing your job, you should feel like adult.