Does not work

This is a poorly documented, poorly coded half-done plugin. The plugin, if you read the fine print, assumes you would go to a github page, and follow vague instructions on what functions you need to call in your theme… as if this is something that the average user can do.

It is a great idea to show many featured images… it is a pitty you have a be a coder, to create your child-theme and hack it to get this to work.