First you go around the end of the jacket rack

At a clothing store

S.K=Store Keeper

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Boy: Excuse me.
S.K: Yes.
Boy: Oh, These aren't sweaters, are they?
S.K: No, those are jackets ... This is the wrong clothes rack.
Boy: Which is the right clothes rack?
S.K: Hah. The sweaters are on the sweater rack; the jackets
are on the jacket rack. That makes sense, doesn't it?
Boy: Yes, that makes sense. Oh, where is the sweater rack?
S.K: In front of the jacket rack.
Boy: Can I try on one of the sweaters myself?
S.K: Yes, that's a good idea. Go ahead. What are you trying to do?
Boy: You said go ahead.
S.K: You can't go under the clothes rack.
Boy: Well, what can I do then?
S.K: Hmm, you can go around it. Follow me ...
First you go around the end of the jacket rack,
and then we go between the two racks.

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1- What does "go around" mean in this sentence?

2- What does "you go around the end of the jacket rack" mean?

Thank you