Brand new to NAS. Purchased My Cloud EX4100. Need help with MY cloud

[Alexandra1]

Thank you @Bennor
when I clicked the link you advised OS5 My Cloud EX series
This is where it took me to, which is where I thought I had posted my original question.

My Cloud OS 5 Firmware for My Cloud EX SeriesThe My Cloud OS 5 software is only available for My Cloud Mirror EX2 Ultra, and My Cloud EX4100. It is not available for My Cloud EX2 and My Cloud EX4 at this time. My Cloud EX2100 is available as a Limited Public Releas… read more 4 6.5k Sep '20
EX2 Ultra Issues (Again!) 14 359 23h
My Cloud OS5 4.22.1.2184 2 39 Aug 5
WARNING: Your ClamAV installation is OUTDATED! error when running AV 3 66 Aug 4
How can I see what percentage of my drive has been indexed?

I will eventually figure it out.
I guess the easiest way to organise is via my MacBook in Finder.