Short answer
HubSpot's KB: add up to ten custom quick filters. Saved to a view, they show for everyone using it; unsaved, only for you. Only Super Admins or the view's creator can save them.
1. In HubSpot
The relevant screen in my demo portal.

2. Worth knowing
Save filters to team views so everyone segments the same way.
3. Related
Views to segments and index columns.