Canon imagePROGRAF iPF815 - Manual (Page 151)

3.
Make sure the Main sheet is displayed.
4.
Click the Layout tab to display the Layout sheet.
5.
Select the A Page Layout check box.
6.
Click Free Layout in the A Page Layout list.
Enhanced Printing Options > Tiling and multiple pages per sheet >
iPF815 Printing Multiple Originals Next to Each Other (Windows)
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