As this is a Swyama Siddha Hanuman Mantra it does not have to get chanted for a fixed range of Mantra Repetitions for being able to utilize it. Special worship and rituals and rules about course, sitting mat, and counting rosary are not suggested for chanting this Hanuman Mantra. The https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s