Google "serpentine layering", this is what this technique is called, but in my experience, hard to achieve, taking a long time and requires constant monitoring to ensure correct moisture levels. You can do one node or many and finding a suitable branch or three often isn't as easy as it may seem. Probably best for "woody shrubs", but not ideal for fast growing herbs like cannabis. Can be done though.
Much faster and easier to take cuttings the normal way.
Hope this helps,...... Organoman.