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Globally - for an entire Refined site (in the global search bar at the top of all pages, and in the Search Highlight module.)
Contextually - for specific parts of a Refined site. For example, you can add Promoted Search Results to a Service Management portalJSM project.
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Promote a link
Head to the Refined Administration.
Click Sites in the left-hand menu.
Pick the site you want to work with.
Click on the Audience Features tab.
Choose the page to which you’d like to add a Promoted Search Result.
Click the + Create New button.
Set up the link.
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