The magnitude of effect is determined by the Feng Shui Master, on his selection of the burial site or niche based on certain data requested from the client. If after the cremation, the family is blessed with good career or business prospect, such that things are turning out well than before, then the Feng Shui implementation is considered well implemented. Conversely, if there is status quo, then it is deemed as not successful.
The time frame is usually 3 to 6 months to achieve the desired outcome from implementing Feng Shui audit advice.