Macbeth act 3 scene 1 two new characters are introduced during the last half of this scene. what does macbeth hope they will do?

In the royal palace at Forres, Banquo paces and thinks about the coronation of Macbeth and the prophecies of the weird sisters. The witches foretold that Macbeth would be king and that Banquo’s line would eventually sit on the throne. If the first prophecy came true, Banquo thinks, feeling the stirring of ambition, why not the second? Macbeth enters, attired as king. He is followed by Lady Macbeth, now his queen, and the court. Macbeth and Lady Macbeth ask Banquo to attend the feast they will host that night. Banquo accepts their invitation and says that he plans to go for a ride on his horse for the afternoon. Macbeth mentions that they should discuss the problem of Malcolm and Donalbain. The brothers have fled from Scotland and may be plotting against his crown.

i suggest it is anadiplosis

brazil   is on the caost