HoloSlider is plugin made for Holomatic theme, included with the theme, that allows you to create sliders that can be displayed on homepage or static pages with "Page Template with HoloSlider"
You'll find it in your main wp-admin menu. On main screen you can add new slider.
Clicking the Edit under each slider name will redirect you to page with settings for each slider, where you can choose which posts/categories/tags to display, how many posts to display, and select slider style. Available styles: