Take Midea's rice cooker as an example. The rice cooker makes an appointment to cook porridge as follows:

1. First, clean the rice and put it into the inner container of the rice cooker;

2. Then, add water according to the thickness of the porridge to be cooked and cover it;

3. Then, plug in the power of the rice cooker and press the "porridge" button on the rice cooker;

4. After pressing the porridge function key, press the "Appointment" button, and the shortest appointment time will appear on the display screen of the rice cooker, which is usually 2 hours (that is, it will start running after 2 hours);

5. If you want to extend or shorten the appointment time, you can adjust the appointment time by pressing the "Up and Down" adjustment key in the menu key of the rice cooker;

6. After setting the appointment time, press the "Start" button, and you can see that the time set in the display screen of the rice cooker has started to count down, and porridge will be cooked automatically at the appointment time.

Different brands of rice cookers have different appointment time for cooking or porridge, but the overall operation idea is the same. You can try to set the reservation function according to the above operation ideas. If you can't find the button accurately in the settings, it is recommended to check the product's instruction manual before the above steps.

This answer applies to most brands of rice cookers such as Gree, Midea and Haier.