To customize the File Explorer navigation pane in Windows 11/10, do the following: Right-click the top of the Navigation Pane and then select Navigation Options. Under Display Options, select the Show Hidden Objects check box. Click OK. In the Navigation Pane, a dimmed icon appears for all hidden objects.
To remove an item from the File Explorer navigation pane, do the following: Right-click the desired library in the navigation pane and select Don't show in navigation pane in the context menu. Right-click the library in the Libraries folder and select Don't show in the navigation pane in the context menu. Uncheck the Show in navigation pane box in the library properties dialog.