What double meaning might shakespeare have intended for macbeths line he does he did appoint so in res the king hence today?

Answer 1

It's not so much a double meaning as a waffle. Saying "He did appoint so" is like saying, "That was the plan"--it smooths over the question of whether that plan will succeed, particularly when you know, as Macbeth does, that it won't. He's talking with half his attention, because he is waiting for Macduff to come screaming out of Duncan's bedroom any second. He is not paying enough attention to invent a full-blown lie, so he uses this weaselly response instead.

Answer 2

Act II Scene 3

• Lennox: Goes the king hence today?
• Macbeth: He does; he did appoint so.

Lennox and Macbeth are standing around making small talk, while Macduff goes to fetch the king. We know, and Macbeth knows, but Lennox does not know that in a second Macduff will discover that the king has been murdered. Macbeth's first answer "he does" could mean that he is leaving Inverness the way he came or that he is leaving this mortal plane for another world, and he will be travelling in this world feet first from now on. Macbeth seeks to clear up any possible confusion by saying that the king had planned to leave Inverness today.