Return to current slide from the summary

You could let them use the PREV button (in the Player, or a custom one on the slide), since the "jump to previous" trigger goes to the most recently viewed slide.

Another simple solution would be to have the dashboard open in a lightbox (instead of jumping to that slide). That would let the user review the dashboard without leaving the slide they're on. 

Otherwise, you need to use variables to track the slide they're on when they jump back to the dashboard. And each "chapter" buttons would need one conditional trigger for every slide in the chapter. In other words, jump to slide 1 if the variable indicates they were on that slide, jump to 2 if the variable indicates they were on that slide, etc. etc. etc.

FYI: Even if you don't use variables and conditions for this situation, it’s worth the effort to learn about them, because they provide the real power in Storyline. Here’s the User Guide info:

• • https://community.articulate.com/series/articulate-storyline-360/articles/articulate-storyline-360-user-guide-how-to-work-with-variables
  • https://community.articulate.com/series/articulate-storyline-360/articles/articulate-storyline-360-user-guide-how-to-work-with-triggers#conditions