In the Embed URL field, type or paste the URL source of the video or photo you want displayed in the block (usually from a video or photo sharing website). Headway uses WordPress’s oEmbed function to display media in this block. A site has to be whitelisted (allowed) for the WordPress oEmbed function for the content to show up in the block. For example, linking to an image that’s on your friend’s blog won’t work unless you whitelist that site. For a complete list of sites whitelisted for the WordPress oEmbed function, see Embeds
in the WordPress Codex. That page contains instructions for whitelisting other sites. If you want to use an image from your own site’s media library, use an <img> tag in a text block instead of the embed block. A layout can contain multiple embed blocks.
Note: In previous versions of Headway, embedding was an option in media blocks.