Mobile

  1. Go to the event page.
  2. Tap Manage people.
  3. Select the Attendee, Organizer or Viewer tab.
  4. Tap the menu [...] button next to the user.
  5. Tap Remove from event.

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Web

  1. Go to the event page.
  2. Select the Attendee, Contact, Organizer or Viewer tab.
  3. Click the menu [...] button next to the user.
  4. Click Remove as [attendee/contact/organizer/viewer].



See this article if you want to Re-invite a user to an event.