Hello Prunes 99,
Your interview will consist of 2 sections. The first section will be on behavioural questions. Study the job description, specifically the success profiles that you will be assessed on. The job description will specifically state the success profiles that you will be assessed on. Ensure that you can give examples of how you demonstrate these competencies using the STAR interview format. Be able to elaborate on your examples. This is very important.
Your will also be given a legal scenario. You should be informed on whether this will be on a family law or criminal law topic. Focus on the topic that you will be assessed on and brainstorm possible scenarious that can arise from the material that is provided.
You can also search the forum for more advice. There are quite a few threads where there are discussions on this. If possible, you should also visit your local Magistrates Court. It puts into practice the scenarios that you could possibly be assessed on.
Be confident, and believe in yourself. You can do this!