WD configuration in a small office?

In a 4/5 desktops configuration what configuration is better for working with Office tools:

a) a sharing folder in WD
b) a folder in every desktop syncroniez with WD

What is/are “Office tools”?

What are you trying to achieve? Backing up files? Syncing computer files to one location? Centralized storage location? Media server?

Have you read the My Cloud User Manual (http://support.wdc.com/product.aspx?ID=904) to gain an understanding of what the My Cloud device is capable of and what features it has and how to configure/use them?

That really depends on how your users operate with files. If you want them to work collaboratively, working on the same files, then it is probably better to have a central file server (backed up), so that if they each try to edit the same file, the MS Office file locks (if that’s what you mean by ‘Office tools’) will report the file in use, and only allow read-only access. to other users.

If you allowed multiple copies on individual PCs, synced to a central file server, then you would need some means to resolve the conflicts if two users had edited a shared file at once.

If your users never work on the same files, then they can keep their files local to their PCs, and use the MyCloud as a backup file server.

You might also want to consider how to use previous versions of files.

There’s no simple answer, because it’s not a simple question; it very much depends on how you work, and what level of file backup/previous version/configuration management you wish to use.