As that is a Swyama Siddha Hanuman Mantra it doesn't have to become chanted for a set variety of Mantra Repetitions for being able to utilize it. Exclusive worship and rituals and regulations concerning path, sitting down mat, and counting rosary are usually not advised for chanting this Hanuman Mantra. https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s