HELP! Can I move/ resize feedback in software simulation?

I've been looking at the forums on feedback masters.  I'm a bit confused.  Ok, a lot confused.  I'm creating a 'try it' software simulation.  I've zoomed in on many of the software screens and as feedback comes up, it's positioned as if it was on a full size screen.  Essentially, the feedback screens are cut off and WAY to large (due to the zooming).  So, how can I modify this?

I understand that any changes I make to the Slide Master will only affect NEW slides.  I'm not looking to redo the work, hopefully just modify a few of the existing feedback screens.

Any advice and help would be wonderful.

Thanks!