“We never know in advance how many there are going to be, because some people register, but don't come,” explains Caroline Fabre, one of the two volunteer facilitators of the event, of which this is the second edition in Angers. That day, the group was full. She is also forced to refuse entry to two young people in their twenties, who came without having made a reservation. “Don’t worry, there will be another session in December,” she tells them with a smile, carefully closing the glass door.