Once your widget is setup, it appears in the widgets list:
To install it on your website, it's really simple.
Copy the code of the yellow box in the source code of your website.
In most cases, if you have access to it, you will choose a part of your website that can be found on every page, such as the header or footer.
If you use a CMS such as Wordpress or Drupal, we recommend choosing the file of your footer.
If you are not versed in the technical aspects, you can ask your webmaster.
For any question, feel free to contact the Sellsy support.