As this is a Swyama Siddha Hanuman Mantra it doesn't have to get chanted for a fixed variety of Mantra Repetitions for having the ability to use it. Special worship and rituals and principles about path, sitting down mat, and counting rosary usually are not encouraged for chanting this Hanuman https://www.youtube.com/watch?v=ufkmD95y7fE&t=32s