An architect or builder can add/manage embedded videos within an element. 

You can add videos from popular video hosting channels (YouTube, Wistia, Vimeo, TED etc) as well as from third-party website urls containing embedded video content. 

To add videos to an element, you need first to have created a video content area (see How do I add/manage content areas within an element?)

Next, ensure you are in edit mode, by clicking the edit mode action button from within the element action bar.

Within the element builder window, you can now add videos to a video content area: as denoted by the tag in the top left of the content area.

To add an embedded video to your element, click on the “Add a video +” button at the bottom of the content area. Next, type in the video url or embed code and any video title (optional) you wish to display within your element. Click on the save action button to confirm. 

To delete a video, click on the delete button to the top right of the video.

All change made to the element are only finally saved by clicking on the element save and close action button from within the element action bar.