"Thereof" and "therefor" function very much as if they were "of it/them" and "for it/them". Neither one quite seems to fit the sentence, in my opinion. If you mean "the number of divided timings... and the method (of divided timings)" it would be reasonable to use "thereof", but I think it could be said more simply and clearly.
I am honestly not sure what the sentence is meant to communicate.
"Therefor" is rarely used in my experience. It might be used in legal or academic settings but rarely in everyday business documents, as far as I know. It would be too easy to confuse it with "therefore", which is pronounced exactly the same way. I can imagine it in a sentence like: "The exact nature of the penalty and the reasons therefor are not public knowledge", but I would not use the word, personally.
"Thereof" is also rare but more common than "therefor" (or "thereto", for that matter).
I am not sure what "embodiments" means in your sentence. I understand the word "embodiment" but it appears to be used in a very unusual way here.