I am using moodle 3.7. I've looked all over. The settings page has the Example submissions category. It has a checkbox to turn on example submissions and a dropdown list which controls whether assessing the example submission is voluntary or not.
On the main page under the Setup phase it lists "Prepare example submissions" with a red X beside it since I haven't completed that. Clicking on the Prepare example submissions text does nothing.
I thought maybe I might be able to provide the example submission under the Edit assessment form page, accessed via the Administration block. But there is nothing there to do it.
So, I'm at a loss for how I add my sample submission. I'm having the students submit pdfs. So I've got a pdf prepared as an example. But I can't figure out how to upload it. It's not super-critical. The workshop is sufficiently simple that they should be able to do it without an example. But I'd like to figure out how to do this for future workshops that I use.