Remote File Access

I’m looking at purchasing an EX2 for NAS within a 3-user office. From what I’ve seen, there’s no issue for using it as a shared drive or for backup.
The literature seems to indicate that files can be accessed remotely via My Cloud, but it all seems to relate to music & photos.

Can the EX2 & My Cloud be used to access Office files for remote editing? Remote PC (Windows 10 or 7 desktop) will never be brought into the office.
I’m not looking for a OneDrive experience where files are updated in a cloud and synch’d back to a drive.

TIA

Any files are possible. Use the cloud services or remotely log in to dashboard file manager for download and upload.