This feature is for adding cemetery images, not headstone images.
If this is an image you have on your computer you would like to add:
#1 Click Search BillionGraves to find an existing cemetery.
#2 Click the + button next to Images of Cemetery.
#3 Drop the file or upload into the box, and click done.
If this is a photo you came across during transcription:
#1 Click on the red flag in the right hand corner of the screen.
#2 Choose Cemetery Gate or Property (Not a headstone).
This will move the photos out of the transcription que and into the images for the entire cemetery.