As this can be a Swyama Siddha Hanuman Mantra it doesn't have for being chanted for a set variety of Mantra Repetitions for being able to utilize it. Exclusive worship and rituals and regulations about course, sitting down mat, and counting rosary are certainly not recommended for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s