There is an item named Availability Panel in Calendar:

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When I open it this message is shown:

This calendar does not support availability.

What kinds of calendars are supported for calculating availability? I have personal calendars in Calendar with recurring events that none of them work with Availability Panel. enter image description here


On BusyMac there is an article about that. The Availability Panel is supported by e.g.:

  • Exchange and Office 365
  • Fruux
  • OS X Calendar Server
  • Kerio
  • Zimbra

and not supported by e.g. iCloud, Google Calendar, Yahoo, Communigate, Beehive.

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