As this is the Swyama Siddha Hanuman Mantra it doesn't have to be chanted for a set amount of Mantra Repetitions for having the ability to utilize it. Exclusive worship and rituals and policies pertaining to direction, sitting down mat, and counting rosary are not advisable for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s