In Calendar, Groups are located after calendar folders for your account. In Mail, Groups are located under the Groups node for your account. View all your Office 365 Groups in Mail and Calendar view. More Office 365 Groups, including Calendars Type a message in the text field in the meeting invite and select Accept, Tentative, Decline, or Propose New Time. Respond to meeting invites with email responses to the organizer directly from the Reading Pane.
Select Task Pane in the View menu or use keyboard shortcut Shift+Command+] to turn Task Pane on or off. View upcoming events in agenda or day view in the main window for mail.
Click in the search field or use keyboard shortcut Shift+Command+F to search. Search is now powered by Microsoft Search and has better results and suggestions.