On the washing machine is a bottle of liquid laundry detergent for white laundry and a bottle of liquid laundry detergent for colored laundry.
Pull out the white tray at the left of the machine. The detergent goes into the leftmost compartment. Turn the switch to 40°C (colored laundry) or 60°C (white laundry). If necessary, Delay the start time by clicking the gray button nextright of the display (with a clock sign). Click on start.