Click the Page Preferences link on the left side of the Messages screen.
The Preferences screen will open.
Click the Edit button at the bottom of the screen.
Enter the number of messages per page that you would like your Messages Screen to display. The system default is 20 messages per page.
Use the drop-down menu to select the message type to which you would like the Messages Screen to default. The system default is “All Message Types.”
Click the Update button.