WINDOWS:
In Shield Windows client all work files and folders - excluding program and application folders - are backed up by default. This way you can be confident that all important files are always kept safe. However, end-user or reseller can easily exclude data (folders or file types) from the backup, if needed.
Note: Certain applications may use databases that are saved under program folders, which are not backed up by default. This kind of database files need to be separately included in backup.
MAC:
In OS X client all files in user's Home Directory will be backed up by default, except Library folder and all it's subfolders (e.g. iCloud Drive). So please note that contents of Library folder cannot be backed up.
Administrators as well as end-users themselves can also exclude additional folders and content / file types from the backup (e.g. external drives, compressed files, binaries etc).
End-users can do this in their client settings, by selecting Settings. In Exclusions click ...except and in the new popup window tick the content types and formats that should be left out from the backup.
End-users can also select individual folder(s) to be excluded from the backup. Click ...except and in the new popup window click Change and Folder (bottom left). You can now see the directory structure of your computer, and you can tick everything that doesn't need to be backed up. Usually folders in the User Folder are the most important, e.g. Desktop, Documents etc. Be sure to leave those unticked (no red "x") to back them up.
Administrators on both reseller and customer level can change the settings via Nexetic Shield Management Portal.