Hello,
You can customize the INI file used as main configuration using the PhpdocxUtilities::$_phpdocxConfig static public variable. For example:
PhpdocxUtilities::$_phpdocxConfig['transform']['method'] = 'libreoffice';
PhpdocxUtilities::$_phpdocxConfig['transform']['path'] = '/opt/libreoffice/program/soffice';
$docx->transformDocument('output.docx', 'output.pdf');
This static variable allows using a single installation for more than one license (the license key can be updated), changing the LibreOffice path dynamically and others.
Regards.