Top-Down is used to refer to a situation in which decisions are made by a few people in authority rather than by the people who are affected by the decisions
Lady Macbeth: she worries her husband is too kind-natured to be able to take the crown however is determined to assist him. She calls on demonic spirits to help her.
Macbeth: he is not convinced, even though his ambitious thoughts led him to think about it previously, Lady Macbeth starts convincing him - this shows him as weak-willed.