1. Browse to youtube.com
2. Find the video you want to embed in your site, and display it.
3. Click “share”, then “embed”. There will be a text box with code selected. Copy this code. It will look something like this:

<iframe width="560" height="315" src="//www.youtube.com/embed/XervzRyXukY" frameborder="0" allowfullscreen....

Now go over to Sitemaker to insert the video.

1. Click on the “insert” (+) icon, and choose the HTML snippet object.
2. Click on the “Setup” tab, and insert the code you copied in the resulting box.
3. Save the changes.
4. Resize the window if prompted.