Crossword Genius

Is this what plagiarists are expected to do working for the advertising company? (4,6)

Ross

I believe the answer is:

copy editor

I'm a little stuck... Click here to teach me more about this clue!

'the advertising company?' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps there's an association between them I don't understand?

'is this what plagiarists are expected to do working' is the wordplay.
I cannot quite see how this works, but
'to' is within the answer.
This may be the basis of clue (or it may be nonsense).

'for' is the link.

Can you help me to learn more?

(Another definition for copy editor that I've seen is " Newspaper checker".)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.
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