Adding Shared Calendars - Web Log in to Office 365 using a desktop shortcut (where present) or using this direct URL: https://outlook.office.com/calendar/view/workweek If the Calendar isn't already on the list on the left (check under any of the default groups "My Calendars" / "Other Calendars" / "People's Calendars"), click the "Add Calendar" option Click the "Add from Directory" option Type the name of the Calendar you need and click it from the list: Click the "Add to" option and select "My Calendars". This will add the calendar near the top of your calendar List Check the calendar is ticked on the list, the appointments will now show alongside your own in the calendar view: Done!