View other people's calendars in 365 - MacOS Calendar app

We recommend using Outlook for Mac instead. 

To add other people's calendars on the Mac, you will need to:

1. Open Calendar app
2. Open Calendar > Preferences > Accounts
3. Select the Exchange Account
4. Select Delegation
5. Click the + (plus) button
6. Start entering the name of the calendar owner to search for the user/owner of the calendar and select them from the list that pops up
7. Allow a few seconds for a refresh
8. Tick the Show button to add the calendar to your main view

Let us know if you can’t see or don’t have the correct permission to something