The Arrange Views dialog box lets you dictate how different view windows are grouped together in the Structural Graphics display.
The arrangement you specify applies only for the current work session. Default settings for arrangements are setup through Customizing.
Left side of dialog box
Use the left side of the dialog box to adjust how windows are structured, for example, side-by-side or stacked on top of each other. To do so, click on the appropriate option.
Right side of dialog box
Use the right side of the dialog box to rotate the order in which windows are presented. Normally, view windows are displayed in the order that they were opened. However, you may decide the information shown in the third window should appear first. To change the order of the view windows, click on the different arrows to achieve the desired effect.
For more information:Arranging Views