Help, Navigation Restriction
Can someone help me? I'm a new Storyline user building my first interaction. I've built an activity that requires the user to view examples of errors and explain why they are errors. I put the examples on a slide with layer, i.e. example 1, 2, 3. I want the user to view each layer before they are able to move on to the next slide. I put a back button on each layer so they would return to the base slide, however, if the user click 'next' instead of 'back' they will skip the other examples. How can I restrict the next button until all examples are viewed?