As this is a Swyama Siddha Hanuman Mantra it doesn't have to become chanted for a hard and fast variety of Mantra Repetitions for being able to use it. Specific worship and rituals and guidelines with regards to direction, sitting down mat, and counting rosary are not advisable for chanting https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s