Hyperlink to another slide "concerns"?

Hi there!

I'm fairly new to Articulate and I have a problem that I don't know is solvable.

I've created a training course for our employee base.

The way ive set it up; there is an "index" slide that has links to the various sections within the course.  I want to make it so someone can't just click on the links to further slides without having to actually view the content (like shortcut to "Summary" and then just end the course).

Is there a way to have it so the links only take them to slides that they have visited?

If this doesn't make sense I can post screen shots if that helps!

Thanks!