让 and 叫 — having someone do something

規則 让/叫 + PERSON + verb: 妈妈让我早点儿回家。 老师叫我去他那儿。
The person sits in the MIDDLE, not trailing at the end.
让 is gentler; 叫 sounds like an order.
The negative goes before 让: 我妈妈不让我玩电脑。 别让他知道。