As that is a Swyama Siddha Hanuman Mantra it doesn't have to generally be chanted for a fixed range of Mantra Repetitions for with the ability to use it. Exclusive worship and rituals and policies concerning way, sitting mat, and counting rosary are not recommended for chanting this Hanuman Mantra. https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s