The slider will display the images that you have uploaded to the current post or page. If you need more options, this simple shortcode features multiple attributes that you can set. You can add controls to go back and forward on your slides, select an specific transition between images, show the image title, adjust the size of the displayed image, wrap the image with a link to the image file, adjust the transition speed, the pause between transitions, the initial delay before the first transition or exclude some selected images. Finally, if you want to change the default settings across your site, you can do so on the settings page, where you will also find all the documentation about the parameters on the WordPress contextual help at the top of the screen.