Source images should be placed in the same folder as your project file.
To link an image to a source, ensure the Media section of the source panel is visible (click > to expand it), then click +. You can add a local image (specific to this source) or link to one already in the media gallery.
Multiple images can be added if the source spans more than one page. The linked images can be viewed on the Source tab, with a toolbar for zooming, panning, and navigating between pages.
You can draw highlight paths on top of source images — useful for marking a specific entry on a census page. These annotations do not modify the original image and appear only in Pedigree Forge and report output. Select a drawing mode from the Draw Path drop-down; select "None" to pan the image instead. Use "Clear paths" to remove all annotations on the current image.