Once you log on to the iOffice application, you can use the My Preferences screen to personalize various settings for your username, including your default language, alerts, and centers.
To access the My preferences screen, click your username in the upper right-hand corner of your browser window and select the Preferences option from the drop-down menu. The My Preferences window displays, where you can define your personal settings as necessary.
My Preferences screen
For example, to change your default language, simply click the Language field to display a list of available languages. Select a default language from the list and click the Update button in the lower left-hand corner of the screen to save the changes.