Permissions allow you to give people access to your calendar.  Depending on your Outlook client version, you may see different settings.

To assign permissions to your calendar, see Sharing Your Office 365 Calendar for more information.

Availability Only Shows the times of items on your calendar and no other details
Limited Details Shows the time, subject, and location
Full Details Shows the time, subject, location, and other details of all items 
Editor Can edit your calendar as well as view all details of calendar items
Delegate Can editor your calendar, view full details, and send and respond to meeting requests on your behalf


Owner Create, read, modify, and delete all items, and create subfolders. Can change the permission levels that other people have for the folder. 
Publishing Editor Create, read, modify, and delete all items and create subfolders. 
Editor Create, read, modify, and delete all items.
Publishing Author Create and read items, create subfolders, and modify and delete items and files that you create. (Does not apply to delegates.)
Author Create and read items, and modify and delete items and files that you create.
Non-Editing Author Create and read items s only.
Reviewer Read items only.
Contributor Create items only. The contents of the calendar do not display. 
Free/Busy Time, Subject, Location See free/busy time as well as the subject and location of items. Cannot Create Files and can only read this basic information, not the full files.
Free/Busy Time See free/busy time only.
None No permission. You cannot open the calendar.


This option is not recommended if others need to schedule meetings with you.

NOTE: These steps do not prevent someone from tentatively inviting you to a meeting.

  1. Click on Calendar
  2. Choose Tools | Options | Calendar Options | Free/Busy Options.
  3. Click on the Other Free/Busy button
  4. Set 'Publish = 0 month(s) of Calendar free/busy information on the server'.
  5. Click OK.      

To set this on a resource calendar (e.g., conference room), the resource owner must first sign onto the resource and then follow the steps above.

Note: People given rights/permissions to your calendar can still see it but they cannot do a Free/Busy search against it. If there are already appointments on your calendar before these settings are changed, those appointments will still be searchable (i.e., entries added after the change will not be searchable).

Article number: 
Last updated: 
February 15, 2023