To embed a video call on a Wordpress.org site, start by adding a Custom HTML block to your page and then paste our provided embed code into it. Replace the URL with one of your own, such as a basic call room created in your Daily.co dashboard or a custom room created with their API. Once live, you'll see a video call running in the lower right corner of your browser window, which can be fully customized if desired. Additionally, note that there are iframe plugins available for Wordpress, but they require extra code and styling to work properly, making the Custom HTML block a recommended option.