He explains very clearly in the chapter that the process is identical to the path of mastery (three factors, etc) yet on a smaller scale: the soul still must pay karma, eliminate ego, transmute, etc. And, as a minor path, it is easier, but also has fewer benefits and more fragility. The soul does not achieve mastery but only a certain degree of "cleanliness."

Ultimately, our path is determined by the Innermost, unless the soul rebels.