Using Zoom Regions

Is there a way to use the Zoom Regions action and control it using triggers?  I want to zoom into an area when the learner clicks/hovers over a marker.

If not, can you recommend a better option?

I am creating a guide to help my learners become familiar with the SL2 interface and was planning to simply use markers to direct their attention to certain locations on the interface.  However, the image of the interface is a bit small so I was trying to enlarge that section of the image when the learner clicked/hovered over it.

Thank you for your help!