If your carousel isn't showing below, make sure you have published a newsletter issue or slide image(s) to populate the widget's content. You can make updates to your carousel by clicking the edit (pencil) icon next to the widget name under Admin > Widget Settings.
Post Your Widget to the Web
NOTE: If you want to render multiple widgets on your page, you will just need to add the additional <div> tags to your page where you want the widget to render (you will only have one <script> tag).
Once you have added your HTML and JavaScript, your carousel should appear on the web page within a few minutes. You can include the widget in multiple places on your site, but you need to complete setup just once for each placement.