As this is a Swyama Siddha Hanuman Mantra it does not have being chanted for a fixed number of Mantra Repetitions for with the ability to utilize it. Specific worship and rituals and guidelines regarding route, sitting mat, and counting rosary are certainly not suggested for chanting this Hanuman Mantra. https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s