The TSW4 manual -- which I do appreciate, but wish it were searchable, lists "Quick Play" as a feature, but does not explain how to access or use it. I'm interested in instructions, not guesses, complaints, or SWAGS. Thanks. "Quick Play Quick Play will randomly select any Training, Scenario or Timetable Service that you haven’t yet completed, from anywhere in your collection. Maybe you will be driving a train you haven’t tried yet, or revisiting a classic route you haven’t experienced in a while. Quick Play also lets you pick between duration times, so you can even squeeze in a quicker service if you’re in a hurry."
It's right next to the route selection. You can then select if you want something shorter or longer than 30 minutes.
Also worth going into the Settings and under one of the headings disable the Include Training Center in Quick Play as it will just keep trotting those out otherwise.