I need to add more Tabs with the REST API Docusign. I use the example they give here : https://developers.docusign.com/esign-rest-api/code-examples/quickstart-request-signature-email
But i don't know how to add more TABS like Initials?
$signHere = new DocuSign\eSign\Model\SignHere([ # DocuSign SignHere field/tab
'document_id' => '1', 'page_number' => '1', 'recipient_id' => '1',
'tab_label' => 'SignHereTab', 'x_position' => '195', 'y_position' => '147'
]);