As this CPD does not concern an actual client, and the scenario is entirely fictional there is no requirement to maintain confidentiality regarding the details of the story.
But as your peers need to feel free to say anything (usual exceptions about money laundering a terrorism still apply!) there is a requirement that other people's thoughts and opinions about therapy are not shared outside the room.
The exception is that you are at liberty to talk about your own thoughts and feelings about this case with your own therapist or supervisor.
If you wish anything to be added to this contract, please let me know and I will add it.