Don’t rely only on your knowledge to know who may need to attend a meeting. Ask attendees who else may need to attend.
Send out any presentations, charts, or other information that will be used in the meeting ahead of time. Give attendees time to review the info so they will pay attention in the meeting and be prepared with questions/concerns.
Send out a meeting invite and be certain the purpose of the meeting, meeting time and place, and required attendees is clear.