Murder someone. Specifically. Banquo and Fleance.
Macbeth didn't want to fight Macduff, because he didn't want to add any more bloodied casualties to the Fife Castle massacre body count. In Act 4 Scene 2, Macbeth [c. 1014-August 15, 1057] had Macduff's entire family and household massacred at the Macduffs' home of Fife Castle. In Act 5 Scene 8, Macduff finally caught up with Macbeth and challenged him to fight. Macbeth didn't want to fight for two reasons. The reason that he didn't reveal was the witches' warning to beware of Macduff. The reason that he did reveal was the weight on his soul from having ordered the Fife Castle massacre.
The first apparition warned Macbeth, 'Macbeth, Macbeth, Macbeth: beware Macduff, Beware the Thane of Fife. Dismiss me. Enough'
Lady Macbeth is excited about it. Macbeth is of two minds: "This supernatural soliciting cannot be bad; cannot be good."
Macbeth was macduff's host and he was under macduff(in ranking)
Scotland
In scene two of Macbeth, the absence of Macbeth is introduced through dialogue between Duncan and Banquo. Duncan inquires about Macbeth's whereabouts, expressing his expectation of Macbeth's presence. Banquo informs Duncan that Macbeth's absence is due to being occupied with his thoughts and preparations for their upcoming meeting.
No it is Lady Macbeth that smears the guards with blood because Macbeth does not want to go back, so she goes and does it instead.
Banquo and Macbeth. And the other witches, of course.
In Act 2 of Macbeth, King Duncan is murdered by Macbeth in his sleep. Lady Macbeth also kills the two sleeping guards to frame them for the murder.
Assuming you meant when Macbeth sends the two assassins to murder Banquo and Fleance, it is because he doesn't want Banquo's children to become kings like the witches predicted. It only worked half way, because yes they did kill Banquo, but not Fleance.
Lady Macbeth is duplicitous Macbeth is two-faced towards Duncan The witches seem to be giving simple info to Macbeth, but are the really preparing him for his downfall?
"Macbeth" by William Shakespeare has a total of 2,105 lines.