Replacing people with lui, leur = him, her, them (indirect ...
https://french.kwiziq.com/revision/grammar/when-to-use-lui-and-leur-to-replace...Lui and leur are only used with verbs usuallly followed by à. Other pronouns are used for the other cases. You can read more about those other cases here: Replacing nouns with le, la, l', les = it, him, her, them (direct object pronouns) Me, te, nous, vous = …