After following the steps from: Setup Webchat, click on Copy Code.
Log in to your WordPress account.
In the lefthand side menu, click on Custom CSS & JS.
If you don't see Custom CSS & JS, add the code to your site's footer using whatever tool your WordPress site uses for custom code.
Click on Add Custom JS.
Give your code a name that helps you easily identify what it is for.
Paste the code.
Choose Footer in the Where on Page section.
Choose In Frontend in the Where in Site section.
Click Publish.
💪 Dynamic webchat
Any changes you make to your webchat settings update dynamically, so you won’t need to repeat these steps.