As this can be a Swyama Siddha Hanuman Mantra it doesn't have to be chanted for a fixed amount of Mantra Repetitions for being able to use it. Particular worship and rituals and policies regarding route, sitting down mat, and counting rosary will not be encouraged for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s