Question

How do the witches manipulate Macbeth

Answer 1

The witches help to seal Macbeth's fate through manipulation since they do not have the power to just kill him outright.

I hope this answer helps, if you have any other questions feel free to ask :)

Answer 2

Though the witches prophesied Macbeth's ascension to the throne, they did not necessarily manipulate him. However, their suggestion that both Macbeth and Banquo would rule precipitated Macbeth's ambitious moves.