As this can be a Swyama Siddha Hanuman Mantra it does not have to get chanted for a set variety of Mantra Repetitions for being able to use it. Special worship and rituals and procedures relating to course, sitting down mat, and counting rosary aren't recommended for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s