In 1917 she said: "The other half of the sum will be granted when he finishes (has finished) to instruct the three students he had committed (himself) to train."
According to that 100 years old document the other half of the sum was to be granted (would be granted) when he had finished to instruct the three students he had committed (himself) to train.
What would be the right form for both cases?
I am not sure whether "himself" has to be added or not and also whether "when he had finished" can end in a future in the past like "would be granted" or "was to be granted". There are also other things like whether "finishes" and "has finished" can be both transformed in reported speech in "had finished" or "finishes" turns in "finished" and "has finished" in "had finished"?