Enter a delimited list to setup the social icons / links you need.  This should be in the format:

url|title|icon

For example:
<pre>
https://example.com/course/search.php|Search Moodle|search
https://facebook.com/|Facebook|fa-brands fa-facebook-f
https://X.com/|X|fa-brands fa-x-twitter
https://twitter.com/|Twitter|fa-brands fa-twitter
https://instagram.com|Instagram|fa-brands fa-instagram
https://example.com|My Web|globe
</pre>
Where the Font Awesome icon can be its name or CSS classes.  For reference you can find the full list of Font Awesome Icons see '<a href="{$a}" target="_blank">here</a>'.