Broadly, there are 4 outputs from meetings:

Share information — cascading information to others, answering questions, and providing new knowledge.

Discuss ideas & feedback — brainstorming new concepts, sharing retroactive feedback, and creative problem-solving. 

Achieve alignment — getting all stakeholders to agree on a subject.

To kick-off the meeting, these items should be communicated first:

You start to lose someone’s attention at around 20 minutes. Longer meetings should be reserved for all-hands and other more passive, information-sharing type meetings.

Make decisions — weighing upsides and downsides of decisions, sharing point-of-views, and coming to a decision.

Why we’re having this meeting and what the goal isAgenda overview 

Context and details to provide participants a baseline understanding of the subject should be included. This is information that doesn’t necessarily need to be communicated live.