How to Install Slideshow Captions for Jetpack Plugin, Manually
Upload the jetpack-slideshow-caption directory to the /wp-content/plugins/ directory.
Activate the plugin through the ‘Plugins’ menu in WordPress.
While editing an entry: “Add Media” button > “Create Gallery” > Choose photos > “Create new gallery” > Add captions to photos > Change type to slideshow in “Gallery Settings” > “Insert Gallery”
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Plugin Not Working?
If any errors or problems with the plug-in then write comments.