How can I find the handlebars location for changing a poster's title in the UI?

I’d like to replace it with something else (an external api’s online status) but I can’t seem to figure out how to reference it.

I found some other how-to articles that referenced this:

<script type='text/x-handlebars' data-template-name='/connectors/poster-avatar-bottom/external-site-link'>
  {{#if externalSiteLink}}
    <span class="external-site-link">{{{}}}</span>

Which seems like the type of thing I’m looking for. I just need the correct placement.

The code seems like something that may Go in the </head> or </body>
Section of Customize in Admin panel.

Yup, I have it working and I’m testing it in the the admin customizations before maybe breaking it out to a plugin. I’m just trying to get it in the right place by referencing the poster title area in the UI.