When you have created many spotlights or shortcuts you might need to prioritize one or several of them because it is your commercial strategy, or simply because one event spotlight is more important than another one, or your own brand is more important than the others, etc.
By pining or putting as preferred a spotlight or shortcut you will impact their ranking positions where they are displayed in the search layer, and make them more visible (graphic emphasis).
The display positions vary between Sensefuel Max and other Sensefuel versions.
Pining spotlights or shortcuts also affect their display in the Zero Result and eventually in the Search Home if you are using Sensefuel Max.