As this can be a Swyama Siddha Hanuman Mantra it does not have to become chanted for a set amount of Mantra Repetitions for being able to use it. Exclusive worship and rituals and rules pertaining to route, sitting down mat, and counting rosary will not be advised for chanting https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s