Albert Kushlick first showed me this technique. He used it for setting up hostels for the mentally handicapped and I then used it when setting up a Medium Secure Unit. It could be applied to any Unit and I am writing it up because I found that staff members in new units had run into problems where they had not adopted this or a similar approach. The idea is to show how one can translate ‘aims' or ‘principles' into ‘brass tack’ practices by design and with consultation in a multidisciplinary setting.