Org admins have the ability to add a company message that displays to all users. Should you like, you can add a link to this message as well.

Here is an example of a company message with a link:
Your message is: “To learn more about Autodesk click here.”

To add a link to the word “here,” you would edit the text as such in the message box:
To learn more about Autodesk click <a href=””>here</a>.

The <a> is where the link starts and the </a> is where the link ends. The text in the quotations will not be visible.