In the lesson we are told "en" cannot replace people.
In the test, the phrase "Il s'en occupe tout de suite." is given. The correct responses indicated are:
He takes care of it right away. (I understand this is correct since it doesn't not refer to people.)
and
He takes care of them right away. ( I thought the lesson explained "en" can't refer to people, therefore,
following the lesson, I would think this would be, "Il s'occupe d'eux tout de suite.)
The sentence, "He takes care of him right way." is indicated as incorrect (I would think this would be Il s'occupe de lui tout de suite.)
What am I missing?