Any kind of web link can also be used as a starting point for your async discussion. For instance, you can refer to an article, YouTube video, or document.
Choose the “Link” on the left menu.
Paste the URL
Paste the URL and it'll show up in the preview.
Submit it
After clicking on the “Continue” button you can either leave the original title or adjust it to your needs.
Publish your link by clicking "Submit".