By hyperlinking an invisible rectangle in your InDesign file, you can create what we call "hotspots". These hotspots are how you call on the feature you would like to use in the area the rectangle is placed.
Let's look at an In Page Slideshow as an example. Here we have a basic page (P1-1.pdf), that features an IPS on the right hand side. The image below shows where we have placed our invisible rectangle which we have given a hyperlink of 'IPS1', so that's the name of our hotspot.
Prepare your images to go into your slideshow to the dimensions of your hotspot, and label them like these guys shown below.
You can find out more about the Oomph Folder Structure in more detail here, but you will need to put your images into a folder called IPS1 (remember, that's the name we gave to our hotspot earlier) and that's how Oomph knows where to look for it.
So the finished page will look like this:
And that's essentially what a hotspot is and how they work. If you have any questions, post them as a comment below or email us at email@example.com.