Help mounting a network drive

Help!

I'm running piCorePlayer v8.1.0 with LMS on a Raspberry Pi 3B+ which is fitted with a Hifiberry Digi+ Pro. I have the Tidal plugin on LMS, and everything is working a treat and sounding lovely fed into the DAC of my Quad Vena 2 Play.

I also have about 300gb of music stored on a USB disk drive which is plugged into the USB socket on the back of my EE Smart Router. This is visible on my PC as \\BTHUB6DX, and I can access it with the FileBrowser app on my iPhone, where the route appears as BTHUB6DX/usb1. The music files are stored in a folder BTHUB6DX/usb1/Music

I'm trying to Setup Network Disk Mount on the LMS tab of the piCorePlayer GUI but so far without success. I'm using "hubusb" as the Mount Point name, and the IP address of the router, ie 192.168.1.254.

So,

1) What do I put in for the Share Name?

2) do I use CIFS or NFS as the share type, and if CIFS, how do I find or set up the username and password?

and

3) what options do I need, if any?

Not sure if it's relevant but Samba is installed and running, and Additional File Systems and ExFAT File Systems are in use.