No place to set featured image

Hi there,
I think your plugin is just what I am looking for . . . except . . I’m not sure how to get started! I watched your demo video (thanks!), but when I go to add a new item, there is no place to set the Featured Image. If I put the logo into the Content Composer, it doesn’t show up.

I am sure I am missing one easy, obvious step! Please, your prompt assistance would be deeply appreciated.

Thanks in advance for your help.

https://www.ads-software.com/plugins/owl-carousel/