Assigned or not, you need to take this back to whoever requested it and explain that it is not sound pedagogy to attempt to force someone to spend a certain amount of time on a slide. The learner ought to only have to be on the slide long enough to consume the content on the slide, and that happens at different rates for different learners (and at different rates for the same learner, across multiple attempts). Cite this thread if you need support, or hit ProQuest for some empirical backing. Even with more linear formats, like video, where you're more in control of the overall pace, there user can still take advantage of play controls to skim content (and that's a good thing).
