As this is a Swyama Siddha Hanuman Mantra it does not have to be chanted for a fixed variety of Mantra Repetitions for with the ability to use it. Exclusive worship and rituals and guidelines regarding course, sitting mat, and counting rosary are usually not encouraged for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s