This Inc Article on Elon Musk’s three rules for meetings is a must read. I say that as it is a spiritual companion philosophy to my own meeting rules where a meeting can only be one of three types: Distribute, Discuss, or Decide.
Distribute – Usually a town-hall or informational update where the flow of information is one way and specifically topical.
Discuss – We are there to deeply go through an issue, item, or effort. Its a time to get the variables on the table, options evaluated and interested parties engaged.
Decide – This is not a Discussion. This is a formal, specific decision on something that has already had one or multiple discussions.