You're now facing towards the chair. Turn right and walk straight behind the chairs and then turn left. Now move forward towards the pillar and turn right. Now walk slightly towards your left where you will see a vault. Enter the vault, here you will find three chairs placed in a row. Pass the chairs and take left. Walk in between the two pillars towards the sofa set and walk straight towards the glass door. Stand opposite to the open glass door and that is your end point.