Thanks for the reply Jamberie. I watched the video and she uses butter to grease the dariole moulds. However I think the butter will only work for this type of cheesecake recipe. She unmoulded them before they got cold and she did mention that if they were cold the butter would set hard and they would be difficult to remove. So I did learn something. Thank you.
I will have to practice on family I think. Will try the hot water method first and hope I don't melt the Pannacotta too much.