Slider progress bar
I am trying to create a progress bar from a slider (in the slide Master), which advances as the user goes through the course. I set the steps of the slider to the number of slides. It should however not advance (nor, in fact, go back) when the user visits a slide he has previously visited.
What's the best way to do this? I managed to get the slider going as a progress bar, but I didn't manage it to stop advancing when I revisit a slide.
I have searched the forum but did not find the solution yet.