This extends internally to the multiple-volume glazed atrium in the centre of the building . The entrance atrium is accessible to the public , ensuring a viable interaction between public and private space , with a security access point at the entrance to the main atrium . The main atrium space is the private and semi-secure zone of the building and forms a gathering space for the staff . A staff canteen is located on the ground floor , with external balcony seating areas ensuring visual activation of the streetscape . The first to fourth floors of the building are zoned for private office use . Lobbies within specific departments are accessible with a biometric access control for all staff , ensuring differing levels of security where deemed necessary .
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