Views and Filters
In order to gain control over how Outlook displays your calendar items, go to View > Change View while in the calendar, and select List. This will display a full list of items currently in your calendar, with a search bar again displayed in the top-right corner and column headings that can be adjusted.
For instance to sort your list of appointments alphabetically by subject, left click the Subject column; to arrange your appointments by start date, right-click any column header and select Arrange By > Start Date.
Right-clicking a column header and selecting Remove This Column will take that column out of any future sorts that you perform, while Field Chooser will allow you to add and remove any fields that will make searching for information easier.
Finally the Group By This Field option can be chosen by right-clicking the appropriate column header, and will group your calendar data by the selected field. The chosen field will be displayed at the top of the window, where you will be able to change the direction of the sort if necessary.