You can display youtube videos on your screen.
Go to Contents.
Click on the Content that you want to use.
Click on Add and select Scene from the dropdown list.
Hover over the Scene and click on Scene Designer.
Open widget menu.
Add the youtube widget.
Copy the video id (it is the part after v= on the youtube link).
Enter the video id to the value field.
Enter the start point as seconds from start.
Save and Publish your content.