How do I fill the ink tanks on the HP Smart Tank 580?

Open the front door, then open the cap of the ink tank you want to fill. Twist open the ink bottle, place it upside down onto the tank, and click it into place, waiting for the ink to fill. Once filled, close the ink bottle cap firmly, then close the tank cap securely, and repeat for all tanks before closing the front door. After filling, wait approximately 15 seconds for the printer to detect the ink. (Page 3)