To publish your tool by embedding HTML code into your website, you will need the code in the first box on the Publish page.
Carefully select all the code inside the Embedded HTML box and copy it. Then paste the code into any text editor or directly into an email and send it to your webmaster. He/she will paste it into the appropriate place for it to appear on your website.
You will likely need the help of your website administrator to be able to make changes to your website's code.