When reading publicly - or on a psychic fair it helps to have an hourglas with sands for a given time - 30 minutes- 45 minutes.
When a reading starts you can turn the hourglas over = a riual. The client/ sitter then sees, when the time is over. It helps them to wind it up...
You can do a "regular courtesy" and add a couple of minutes after the sands have run out, to finish up with that client.... You also may have a second hourglas set for the time of the first one plus ~~6 - 8 minutes outside your booth. That gives people waiting a more realistic idea of when a reading is finished and when their reading will start.
See, you may lag behind your original time table of -?? one client every 45minutes and the next clients do not know how much time from that has elapsed... But a half full hourglas of the current reading and 2 names before theirs tells them that they have just under 2 hours to enjoy the fair before their reading with you......