- Navigate to https://outlook.office365.com and login, if prompted
- In the App list in the top-left corner, select Calendar
- The Outlook Calendar view will appear. At the top of the page, click Add Calendar, then select From directory from the drop-down list.
- A small window will appear. In the From directory : field, enter the full resource name of the calendar you want to add, or start typing part of the calendar name and select Search Directory for a complete list.
- After you've selected the calendar you want to add, click Open. The calendar will start loading in the background.
- Depending on the size and number of events in the calendar, it may take a few minutes to populate.
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