Locates in aside in gallery edit page can be open by clicking image. You can preview loaded image and edit it by clicking gear icon.
There are fields:
- Alt / Title - used for alt, title in img tag and title in caption and lightbox.
- Description - used for dsecription in caption
- Connect to post or url - can connect post by start typing post name(any post_type) or insert youtube, vimeo and simple url
- Exclude - allows exclude image from layout output.
- Tags - mark image taged by clicking on it.
Default thumbnails - thumbnails created by gallery attached thumbnail templates, you can preview them by clicking on thumbnail title.
Additional thumbnails - allow add new custom additional thumbnail by thumbnail generator tool.
You can preview result thumbnail with clicking "View example button".