There are three sliders bundled with the theme. If you have the latest update of Enigmatic, you should be able to install revolution slider by following the prompts at the top as shown below –
For rest of the revolution slider setup, import of slider elements, pls watch this video –
Additionally, You can enable Nivo or Flex slider by making entries into Showcase Slides custom post type and setting a featured image as shown below –
Hope this helps.