How do I load paper into Tray 1 (multipurpose tray)?

Open Tray 1, press the tab on the right paper guide to move the guides outward and slide out the tray extension. Place the paper stack in the tray and adjust the side guides so they lightly touch the stack without bending it. At your computer, begin printing and make sure the driver is set to the correct paper type and size. (Page 16)