RobbyB Hello
In the article view of this template, we embed the shortcode of JA Social Share plugin into this file:
/templates/ja_essence/html/com_content/article/default.php
You can look for this code:
<div class="ja-share-button" services="facebook,twitter,linkedin" layout="default" ></div>
Simply remove the facebook,twitter in services param and add the whatsapp service like this:
<div class="ja-share-button" services="whatsapp,linkedin" layout="default" ></div>
Here is full service list supported: facebook,messenger,linkedin,tumblr,whatsapp,twitter,reddit,telegram,line,livejournal,flipboard,instapaper,getpocket,hackernew,kooapp,yahoo,email
P/s: if you're using other article layouts, you can edit the same way in associated PHP file:
/templates/ja_essence/html/com_content/article/type-1.php
/templates/ja_essence/html/com_content/article/type-2.php