1. Add photos from Media Library – You can select images to use within the gallery which are currently uploaded to your WordPress Media Library by clicking on those and pressing * Insert Into Post * button. In addition, you can upload new files, navigating to the Upload Files tab on the left. Then press Select Files button, choose the image and press Insert button. This way image will be added to the gallery.
2. Add Photo URL – You can also add images providing the absolute link to it. Press ADD IMAGE URL, provide the link and press add button. This will be useful for adding images to gallery without the need of downloading those and uploading again.
