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.
(..) And, Senator, just one more thing. Love your suit. In a meeting this evening with Senator Ruth Martin, Dr Lecter agreed to assist in the investigation of trying to find the abductor, Buffalo Bill. - How do you fit in? - My insight into Lecter's mind - made this breakthrough possible. (..)1991 The Silence of the Lambs