As this can be a Swyama Siddha Hanuman Mantra it doesn't have to generally be chanted for a set variety of Mantra Repetitions for being able to use it. Distinctive worship and rituals and policies regarding path, sitting mat, and counting rosary are usually not proposed for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s