explain with reference to the context

You haven't actually asked a question, but if you want the text transliterated it would roughly mean in modern English that the characters are showing bravery (their spirits shining through)

and

That the speaking character will tell the people who he is addressing (I will advise you) where they ought to hide or position themselves (plant yourselves).

Complete RTC of shakespeare play Macbeth's act 2 scene one .....only the dialogues of Macbeth in that section..