Widgets in member hubs Embed an image link, external URL, or third-party widget in a post. Create a custom HTML embed Use custom HTML to add rich external content or a call to action in the body of a post. For example, you can use a widget to direct members to a website or ask them to subscribe to a newsletter. The custom HTML embed also allows you to create member hub widgets. Delete a widget Remove a widget from the hub. Add a widget to a post Use the compose tool to add a widget to a post.