Starting with macOS 13 Ventura, Apple brought Control Center from iOS to the Mac, providing a unified interface for features that users need to turn on and off regularly or that receive frequent adjustments, like screen brightness and audio volume. Clicking the Control Center 
icon in the menu bar brings it up, but it’s a small, hard-to-hit target. For faster and easier access to Control Center from within any app, press fn-C. (All current Apple keyboards have an fn key, but if you’re using a third-party keyboard that lacks one, you’re out of luck.)
