Zoom Through Related Lists with Quick Filters
Use quick filters in your related lists to find the data that you’re looking for. Related list quick filters are different from regular list view filters in that they aren’t saved, persist only throughout your current session, and can’t be shared.
Where: This change applies to Lightning Experience in Essential, Group, Professional, Enterprise, Performance, Unlimited, and Developer editions.
How: Open a related list, and select to add quick filters.