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Conflicts not blocked

Why are calendar events not being blocked on my invite?

There are several common reasons why time slots can appear that you may expect to be blocked due to calendar conflicts:
  1. 1.
    The conflicting event has its status set as "Free." zcal only blocks off events that have their status set as "Busy."
  2. 2.
    The conflicting event has its visibility set to "Only me." This is often the case with events that are added to your Google Calendar automatically by Gmail. zcal doesn't have permission to read "Only me" events which is why they aren't blocked. To get around this issue, change the visibility on the event to "Private."
  3. 3.
    The conflicting event is on a different calendar than your primary calendar. You can specify which calendars to read conflicts from on the account calendars page.
  4. 4.
    You have turned off double booking prevention on your invite. zcal will only prevent invitees from booking over conflicting events in your calendar when this setting is turned on.