Office 365 (Apple iCal/Calendar) - Change Calendar Views
This document explains how to change calendar view in Apple iCal (Mac OS 10.5-7) or Calendar (Mac OS 10.8-10).
Apple iCal/Calendar provides four different views for calendar events: Day, Week, Month, and Year. One can shift the view of one's calendar using the menu, the keyboard, or the mouse.
- With your mouse, click on the desired view on bar of buttons in the top center of the main iCal/Calendar window.
- From the menu bar, select View and choose the desired view from among the first four options.
- Using the keyboard, press Cmd-1 for Day, Cmd-2 for Week, Cmd-3 for Month, and Cmd-4 for Year.
More help can be found on Microsoft's Website here