A YouTube Widget allows for easily inserting a YouTube video to a Kentico page.
Use either the YouTube widget or one of the 4 multiple-task widgets.
Find your video and copy a section of the embed code: click on Share, and Embed. Copy only the code found within the src="" area.
If using the YouTube widget, paste the code into url box found within the Kentico Widget. Save and Close.
If using one of the other Column Widgets, paste the same url into the appropriate "media" area of the widget: