I tried to replicate what you wanted and found it very complicated in Indesign if you have high no.of images but not impossible.....
You will not get the scrolling type effet on clicking the arrow but it will look like it is scroll bar.
Here are the PDF and the Indesign file I created...check and let me know
, Check the buttons panel in my indesign file to check the different button, as I have created "Buttons" and then then used the action "Show/hide button"...
There are no.of buttons stacked one over the other and each one have the "Show/Hide button action"...
You can apply a scrollbar, you have of group the image, then copy and paste in, within a rectangulo, then you apply the scrollbar. But not have as you apply to the scrollbar on buttons. It will scroll to click of mouse our with the touch of our finger on the Tablet.
Sorry for English, i know more our less