To let its users know when a new feature is enabled or available with a short video explaining the new feature, the recommended solution is to use a docked prompt using In-App Guidance. In-App Guidance is a feature that allows the designer to create prompts and walkthroughs that guide users through new or complex tasks in Salesforce. A docked prompt is a type of prompt that appears at the bottom of the screen and can contain text, images, or videos. A docked prompt can be used to announce a new feature and provide a short video tutorial on how to use it. The designer can also set the conditions for when and how often the prompt should appear, and track the user engagement with the prompt. References: : In-App Guidance | Salesforce Help : UX Designer Certification Prep: Designing with In-App Guidance | Trailhead