I use this myself. All its functions can be reserved, and the longest reservation time can reach 24 hours. First, press the function selection key until the desired cooking function is selected. Then press the appointment time button to adjust the appointment time, and then press the cooking time button to adjust the cooking time. Press the start cooking key for 3 seconds to confirm the cooking function of the appointment, and the appointment time is the work completion time. Please refer to the product description for details.