Ungraded mini-quiz as pop-ups during timeline of base slide

Thanks Walt! Unfortunately the slide design is using a template that we do not want to break too much and the reasons this became a long slide is:

a) cause I use lots of voiceovers as 'explainers' of the text (much shorter, so it fits in one slide 50/50 vertical split and animations take place in the opposite side as some bullet points unfold - this happen right left first and left right after - with a transparency base)

b) cause of the difficulty to have a proper planning brought the development of the slide to be done on the fly and in different iterations (so it started with a simple design and got addition over addition till becoming smooth and nice, just long and complicated in the background - a long timeline - but it is actually working nice and easy on the front for users - it is simply long, thus the idea to break it up with mini-quiz). 

I can create a layer but quizzes seems not to be possible in a layer. I am not sure how I can set up one up from scratch though. It could work with a layer, a question, 2 simple answers (pick-one) and a feedback to appear nearby when any is picked. No submit needed. I think I need to experiment with radio buttons or spots that would bring up an object (graphical) with the feedback and then the user would close the layer with a button. Or could be a lightbox so the close button is already there. Was looking for some examples as I am under time pressure. 

I share your opinion on the difficulty of using built-in quizzes when one need to adapt the look (done it, but it's a bit of a pain) but I have never created a quiz from scratch. That is where I would benefit from some examples.

I agree with all you say. Just seems that my type of clients (those that cannot be taken out of their acute  "it's-just-powerpoint-itis" ) are sparing no time to listen. I sometimes wonder if I only find this types. :-)

On with experimenting solutions!

Thanks for your answer!