To improve the user experience, query and result suggestions are highly recommended. Facet suggestions, although not as common, can also be used.
Omnibox Component in order to provide these suggestions to the end users. In Coveo for Sitecore, the component can be added in both the full search interface (Coveo Search/Coveo Search View components) or the standalone search box (Coveo Search Box/Coveo Search Box View components).
This guide covers how you can: