Rpi 3 + OMV 3.0.88 - No Device or directory

OMV image: OMV_3_0_88_RaspberryPi_2_3_4.9.41

used etcher on Mac on 32GB microSD
Device : Rpi 3

Also connected to Rp3 is NTFS formatted 128GB USB 3.0

Click on Storage >> Physical Disk shows i have 2 disks
/dev/mmcblk0 - 29GB
/dev/sda - 119 GB

Problem:
Click on Services >> SMB/CIFS (enabled) >> 'Shares' tab
a. Click Add
b. Click on 'Shared Folder' drop down - no directory shown
c. Click on + in front of 'Shared folder'
d. In 'Add Shared Folder' dialog click on 'Device drop down - DOESNT SHOW Any of my connected devices (microSD or USB)

Any step i may be missing?

i had not watched these.. thanks for pointing to the link.

in plex video - it seems i need to create filesystem which would then be available elsewhere ex. in plex to be shared.

i was able to mount my ntfs for share.