On the WordPress admin menu
Go to the field that says “LayerSlider WP” then to submenu item “All sliders”
To edit a slider just click on which ever one you would like to edit.
To add a new slide click on the green arrow below the navigation menu
Also you can add text and other media over the slider by going down to the “layers” section of the slide page
Be sure to save by clicking the “Save Changes” button at the bottom!