I'm not sure where registry edit came from for this rofl.
You can just browse to C:\Users\Your user. You then create a folder right there and its with the Downloads, etc user folders there. You can pin that to quick access as well and it will show with the others there. Its nothing special.
If you pin to quick access and slide it to where you want on that vertical side list then in the image you can have your custom folder anywhere there such as right after Desktop.
DOES NOT require registry. DO NOT use the registry to do this.