Defines the number of pages displayed on screen. Click the arrow next to the icon to open a grid to select the number of pages to be displayed as rows and columns in the preview.
Icon Multiple Pages PreviewMultiple Pages Preview
After clicking the icon, move the mouse over the desired number of rows and columns.
More Options
You can also choose settings by clicking to open a new dialog, then use the two spin buttons to set the number of pages to be displayed.