Adding sub folders on Synology

[sph2701]

Hi Winxi,
Thank you for your time here.
My main problem is I **WANT** to create sub directories in the main music folder on the new drive.
The main 'MUSIC' directory exists, and Minim can see it and play music from it - I'm listening to the one that resides in it right now.
What I would like to add are further sub folders in this main folder - so I can keep everything tidy.
Sub folders such as CD Rips, DSD, 24Bit, OST etc.
I have tried every which way to achieve this with file station and all you get is a whole bunch of new 'main' folders.
I have searched high and low on the internet for an answer.
I know it can happen as the other drive has just that - if only I could clone that (tried via a bit of software (acronis) but it needs to be part of a pc I think)
Any clues would be very much appreciated.
Cheers,

Steve.