As this is the Swyama Siddha Hanuman Mantra it doesn't have to become chanted for a fixed quantity of Mantra Repetitions for having the ability to utilize it. Exclusive worship and rituals and rules pertaining to path, sitting down mat, and counting rosary will not be proposed for chanting this https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s