Jack can only wait till 14th Oct to sign the Application of Visa in France Embassy .If everything going fine it will take around 5 to 8 working days to process the Visa which means the Visa will only be ready around 21st Oct .
That is to say, Jack can't transact his visa interview in French Embassy until October 14th, if everything goes well, after five to eight working days, you can get your visa around October 21st.
Namely, jack to October 14 to French embassy, face to face sign if all goes well, again, 5-8 work sunrise, i.e. to sign on October 21, or can get a visa.
是要翻译这段话么? In other words, jack until Oct. 14 to be signed in the French embassy, a sign face, if all goes well, wait for 5-8 working sunrise to sign, that is until October 21 before they can get around to visa.