This post has it’s own url can stay the same. Below is another post with that tag “example.” The example post has it’s own url.
Once this pattern is set up, nobody has to think about it anymore, other than to add the “example” tag to whatever post you want to display here.
If you want to try it out, make another post and add the tag “example.” As soon as there is a new post with that tag, that post new will show up here. The one that is showing now will still exist and still have it’s own url.
(By the way, all of this text above the title of the embedded post can be hidden, including the title “Container Post Example.”)