You should walk around to the stairs and walk down the stairs. When you get to the bottom make a right and go to the door on the right that leads outside. You need to wait in that doorway.
Walk down stairs on the left. Walk down balcony to big glass door on right. Stop at 3 steps.
Walk to your right and then turn left and follow the path with glass railings and go down the stairs. Once you reach the bottom. Turn right and go to the door that leads outside on your right. Stop when you reach the door facing the security panel and outside.