I was recently asked to add a button in the header of an Avada child-theme and was surprised when a search turned up no advice. It’s not hard but takes a little digging so I’m posting this in case it might help someone in the same situation.
Avada has six header layout options, selectable from the WordPress Dashboard via “Avada > Theme Options > Header > Header Content”:
These options map to files at “/wp-content/themes/Avada/templates”. You can override the Avada templates by creating your own in a “templates” sub-directory of your child-theme folder and copying a code block containing the action hook from “/wp-content/themes/Avada/templates/header.php” to your child-theme’s “functions.php”.
The local (child-theme) function will be called first at action-time, so the default Avada function will never be called and the local template will be loaded rather than the one in the Avada folder.
There’s a more detailed Gist at GitHub