Dasa Progression & Special Rules

The shloka quoted in the Video is from Chandra kala nadi and by decoding a single dictum -we know rishis are using progression of planet to give results of dasa, Then there are some special rules related to dasa progression as in Chandra kala nadi -no one will write specially that you should special rules related to rules of dasa progression -It is same in Bhrighu Samhita- as only results will be written and you have to write down back story on your own.