As this is a Swyama Siddha Hanuman Mantra it doesn't have to generally be chanted for a set range of Mantra Repetitions for being able to utilize it. Special worship and rituals and policies about path, sitting mat, and counting rosary aren't proposed for chanting this Hanuman Mantra. The Mantra https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s