isn't the switch of this pot marked with the category? Just like ordinary pressure coOKers, after the materials are put in, first select the category, such as boiling bone soup, just click the function key to "bones" and then press the turn key. At this time, you will see a little red dot flashing. After about 15 minutes, the little red dot stops flashing, and the soup will be ok, but you can't open the lid immediately. This is the same as ordinary pressure cookers, and there is no need to explain it later:) Use carefully, don't burn it.