Windows is generally less restrictive about read/write-permissions. If you did not install XAMPP into C:ProgramFiles chances are good, that setting file-permissions does not apply to your installation. In the unlikely case, that your PHP-log shows warnings/errors regarding file permissions, then changing them like you described (with settings > permissions) is the way to go. You just have to find out, under which user name apache is running (via Administrative Tools, Services) and add read/write permissions for that user in the appropriate folder.
In short, you can ignore the sections on setting file permissions on Windows.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…