Those are descriptions of ground layering, the easiest kind when it's possible. Just set it and forget it until the plant, your schedule, and the weather align.
There is also air layering, which takes a bit more effort but once you get the hang of it, a lot of individuals can be created much more quickly, on average, than with ground layering. I don't have the hang of it, can't relay any anecdotes, but can't claim to have tried beyond half-heartedly. So my lack of info to share is no reflection on the method.
But multiplying a plant that has scale, if your plant does, would almost surely just result in having 2 plants with scale instead of 1.
