Can a young child fulfill the obligation of lighting Hanukkah candles on behalf of adults?

Question: A child who has reached the age of education knows how to light the candles and say the blessings. Can he light for everyone in the household?

Answer:

According to the Ben Ish Chai, a minor who has reached the age of education cannot fulfill the obligation of others in lighting Hanukkah candles.

He adds another halachah:

one should not light a Hanukkah candle from another Hanukkah candle by means of a candle or other intermediate object.

That is, the flame should not be passed from one mitzvah candle to another mitzvah candle using a third item.