Using The Gallery Slideshow Plugin: Download the plugin from WordPress.org and install it on your site. Create a gallery via the “Add Media” button while editing a page or post. To activate slideshow mode set the “GSS Slideshow” option to “Yes” in Gallery Settings. (Optional Shortcode Attributes: “name”, “options”, “link”, “style” and “carousel”.) Use “Text” mode in the visual editor to change the shortcode. For example, the default WordPress gallery shortcode:
[gallery gss="1" ids="1,2,3,4,5,6"]
And this is the resulting slideshow:
Here is a slideshow without captions (note pager position):
Here’s a custom slideshow featuring autoplay, set width, linked images, images with different aspect ratios and a carousel pager (thumbnails; new in version 1.3):
[gallery ids="1,2,3" options="timeout=5000" carousel="fx=carousel" link="file" name="cities" style="width:500px"]
Full instructions on usage can be found at the Gallery Slideshow plugin page. Support questions and feedback should also be submitted on the plugin page at WordPress.org. If you use this plugin please consider donating via PayPal and giving it a starred review on the plugin page. Thanks!