Add Smart Slider 3 to a theme you don't see here

You can see the publishing options for our slider in  here. If you can't add a shortcode or a widget to the place, where you want to have the slider, check out this documentation and the video in the bottom to figure out, which codepart do you want to put the slider, and then you could find that in your theme and then publish the slider there using the PHP code publishing method.

You can find detailed documentation on how to publish the slider with PHP to the following themes:

You could follow this documentation too!