The custom JS option allows you to add the third party live chat widget to your BoldDesk customer portal. Go to Admin > Customer Portal > Customization and paste the following custom JS code.

Custom JS code

 const script = document.createElement("script");
 script.src = `{{yourscript}}`;
 document.head.appendChild(script);

Pasting the custom JS codes

To learn where to paste the above custom JS codes, refer to this article.

Related article

1. How to Add a Web Widget to the customer portal.