There are 2 types of meetings, Meet Now (Instant Meetings) and Scheduled Meetings.
This article covers:
You can schedule a future one-time meeting or a future recurring meeting. There are several ways to schedule a meeting. You can invite your participants ahead of time and include the invitation on a calendar or send it out via email. Learn more about scheduling meetings and meeting IDs.
Meet Now (Instant Meetings)
You can start an instant meeting with these methods. The meeting starts instantly and you can invite others to join this meeting at any time. You can use your Personal Meeting ID for Instant Meetings.
In the Zoom client's home tab, click New Meeting. You can also click the downward arrow for instant meeting options.
While in a chat with a contact or channel, click the video camera to start an instant meeting. You can also click the down arrow for instant meeting options.
On the Zoom website, log in to your account and click Host a Meeting.
Note: An instant meeting ID started from Zoom desktop client, Zoom mobile app, or the Zoom website will expire as soon as the meeting has ended. Instant meeting IDs scheduled through the API will expire after 24 - 48 hours.