You can define up to 5 custom slides, but you can also set the slider to grab the slides from:
- latests X posts
- X random posts
- latest X sticky posts
- latest X posts from category
- random X posts from category
- specific posts (by ID)
where X is a configurable count.
To make slider compatible posts it is required to add a post featured image (which will be used as the slide image). Make sure the featured images are of proper size (the same one as the slider is configured). The post title and post excerpt will be used for the slide caption if defined.