Mass Edit Visual Properties

Points of interest, routes, regions and custom labels can be batch-edited. Mass editing any of these also allows you to mass edit their labels at the same time.

Enable "Select" in a panel's header inside the relevant tool (Infrastructure, Regions or Labels). Disabling "Select" or changing tool will leave Mass Edit mode without making any changes.
Tick the items you want to change.
Use Mass Edit to apply visual changes to all of them at once, including assigning a Quick Style. Only the properties you tick are changed; everything else is left as it was.

Quick Styles themselves are managed in Style Library.