Locate the video you wish to embed on YouTube.
Click the Share button below the video.
Click the embed button.
You may want to change the height and width of the video. Make sure that the width of the video does not exceed 700 px.
Copy the code in the textbox that YouTube provides.
Locate the page in Cascade where you want the video to show up.
Click on the HTML button on the toolbar.
Paste the code into the textbox.
Click on the Update button at the bottom of the window.
The video should now appear on the page.