The President was 'assisted' with his speech. = The President was 'assisted' in writing his speech.
a doctor who has been involved in several 'assisted suicides'
Another doctor 'assisted' him with the operation.
(..) I congratulate you, Chief, on your excellent facilities. Of course you understand that my visit here must be of the utmost secrecy? Of course. My department will do everything possible to assist you. However, there is one question... that only you can answer. Oui? Does Sir Charles Litton (..)1975 The Return of the Pink Panther