Google generated hangouts links automatically every time an event is created in your calendar.

If you want to disable the Google Hangouts video setting in the calendar event, you can ask your Google account Administrator to follow the steps below:

  1. Sign in to the Google Admin console
  2. Click G Suite > Calendar
  3. Click Sharing settings
  4. Under Video Calls, uncheck Automatically add video calls to events created by a user
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