You can’t use the sample alternate
Level  | Chocolate heading text to change yours. You need to use the heading from your post.
A heading from in your post content might be:
How to golf properly
You want this to be displayed as
Golf in the TOC.
You would use this:
How to golf properly|Golf
Capitalization matter — the original heading you enter must match exactly as it is in the post. If it does not, it will not get replaced in the TOC with the alternating heading.
To place the TOC anywhere within the post content you can use the
[ez-toc]. Please note that you can use this for manual placement, it is not officially supported.
Hope this helps!