How do I add and set the correct amount of rinse aid?

Open the rinse aid dispenser by pressing the latch on the lid, then fill it with liquid rinse aid until full — do not overfill and wipe up any spills. The amount dispensed can be adjusted from 0 to 6 via the settings menu; a setting of 5 is recommended for best drying results. If streaks remain on dishes, lower the setting; if dishes are not drying well enough, increase it. (Pages 23–24)