In my experience, it is a semi informal meeting of a group of people to talk about death in a cafe setting. The one I go to in my small city is casually moderated by a death doula. Two hours mid-day Tuesday--drop in. I've also been involved in one on-line that is based in Canada, for artists. A different artist presented each month, and then there was discussion. I'm going to do a bit of research for you. Also--anyone else here have knowledge/experience?