The lower right corner of Taskbar in Windows 11 has a button for Notification Center (Win+N) and Quick Settings (Win+A).
Quick Settings is the place for you to manage common PC settings quickly and easily like Volume, Brightness, Wi-Fi, Bluetooth, and Focus Assist. Directly above your Quick Settings, you will see media playback controls when playing music or videos in Microsoft Edge or streaming music in apps like Spotify.
This tutorial will show you how to add or remove Quick Settings for your account in Windows 11.