As this is the Swyama Siddha Hanuman Mantra it doesn't have for being chanted for a set variety of Mantra Repetitions for having the ability to use it. Special worship and rituals and rules regarding course, sitting mat, and counting rosary are not encouraged for chanting this Hanuman Mantra. The https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s