Adding lots of photos to 1 page

 This should be fairly simple to put together.

You'll need to make sure your page is big enough to support the pictures. You can go to the page properties to make it longer if you want. I would recommend using fairly small photos on this page (resized OUTSIDE of Lectora) so that the page doesn't take too long to load. You can have a larger image on each pop-up page.

Then create a chapter at the end of your title for all the pop-up pages. Change the Chapter properties to make the page size the right size, disinherit the interface elements, and add any graphics/text you want to have appear on each page. then add one page to the chapter for each photo.

Finally, go back to the page with 20 images and attach an action to each image: On click, go to, chapter, section, or page. Then select the correct page from the chapter you made. Be sure to check the Open in New Window check box.

Good luck!