To configure iCal or Calendar to access your USC calendar: Configuring iCal/Calendar to Access Your Office 365 Calendar The page also includes links to documentation on how to perform a range of calendar functions from basic to advanced. This page provides instructions on how to configure your built-in calendar application to access your Office 365 calendar. Mac OS X comes with a built-in calendar application called iCal in Mac OS X Lion and earlier and Calendar in Mac OS X Mountain Lion.
