As this is a Swyama Siddha Hanuman Mantra it does not have to be chanted for a set variety of Mantra Repetitions for having the ability to utilize it. Distinctive worship and rituals and guidelines pertaining to direction, sitting mat, and counting rosary are certainly not advisable for chanting this https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s