Dear, I have found the result for you; 1, "Menu" function key: If you want to cancel the selected function during cooking, you can press and hold the "Menu" key, and the electric pressure cooker will return to the standby state; Then press the "Menu" key to re-select other functions. If you open the lid during cooking and then need to cook again, you need to press and hold the "Menu" key to return to the standby state, and then re-select the required cooking function key, otherwise the cooking effect of food may be affected. 2. "Appointment" button: After the rice (or porridge and soup) to be cooked is packed, plug in the power supply, press the "Appointment" button, and then press the activated work button. After the specified time, the electric pressure cooker will automatically enter the working state. Press the reservation button once for 30 minutes and then enter the heating state, press it twice to 60 minutes, and so on. For example, it's 10: 30 in the morning, and you want Supor electric pressure cooker to cook for you at 1 1: 30. You can plug in the power supply after the meal is finished, press the "reservation button" twice, and then press the cooking button, and the electric pressure cooker will start cooking one hour later.