Don't have a meeting. Most people hate meetings and find them a waste of time, and indeed often they are. The first thing you should ask before calling for a meeting is whether it is necessary. Sometimes a phone call is enough. Or an email, an announcement in a chat group. Sometimes you don't need to involve that many people. Meetings are for discussion and debate. If your goal is only to inform, it shouldn't be a meeting. If it is to instruct, it shouldn't be a meeting. Don't do unnecessary meetings. Save everyone's time.
