GOAL: Single image floated left or right, opens in lightbox showing multiple images.
One possible single image to lightbox popup gallery solution? At left is a SP Easy Image Gallery Module, inserted with Modules Anywhere. Manually wrapped in a div to add float:left and margin.
1. Create Album: Components > SP Easy Image Gallery > Albums. Make the first image's title "Click to zoom" or "Click for gallery."
3. Create Module to display Album: Site Modules, new module of type SP Easy Image Gallery.
4. Module Settings* best for this usage: Limit: 1 (to only show the one thumbnail), Layout: Default, Columns: 1 (so unusused space for columns 2+ are not created).
5. Load module by name or id within Article text. Wrap in div to style.
*Module Settings notes: Mosaic Layout definitely for multiple images, probably 6+. Rectangle Layout added class .speasyimagegallery-col-sm-8, making unused space to right of single thumbnail image.
PROBLEM: Limit: 1 means one image in popup too, not just one thumbnail.
