Quick access is accessible via the Navigation panel, the settings can be configured by clicking “Options” in the “View” tab.
Alternatively, you can press the Windows key, type “File Explorer Options” and hit enter. File Explorer’s options can be configured by clicking the “Options” button, located on the far right of the “View” tab in File Explorer. Quick Access is accessible in the Navigation pane on the left of File Explorer.
Tip: You can manually remove individual folders by right-clicking on them and then clicking “Unpin from Quick access” or “Remove from Quick access”.