As that is a Swyama Siddha Hanuman Mantra it does not have to be chanted for a fixed amount of Mantra Repetitions for being able to use it. Distinctive worship and rituals and principles about path, sitting down mat, and counting rosary are certainly not proposed for chanting this Hanuman https://directory-farm.com/listings13052469/a-simple-key-for-hanuman-shabar-mantra-get-rid-of-all-problems-unveiled