Home Office - ALAR - Presenting Officer

Hi, I have an interview tomorrow afternoon for the ALAR - Presenting Officer role and have to do a presentation for 8 minutes. I do not know about the topic or have never done a presentation before.
Any words of advice on the topics, if anyone has done their interview, and tips on how to deliver a presentation? What type of strength-based questions will they ask in the interview?*

Please if someone can reply asap. Thanks