Office 365 - Microsoft Teams - Schedule a Teams Live Event
Information and links to Microsoft Support about how to schedule a Teams live event.
If you are the organizer of a live event, you can schedule it in Teams the same way you schedule a regular Teams meeting. This process will add the live event to your and your event group's calendars. After that, you'll need to invite the attendees.
Check out the Microsoft Support article called "Schedule a Teams live event" for more information and a guide on how to schedule a Teams live event.
*Related KB article: Office 365 - Microsoft Teams - Attend a Live Event in Teams