Syncovery Support Forum

I'm confusing about these two licenses.
Single Business User (Two Systems)
Five-Pack Business License

It's a little confusing me about "Single User" meaning.

Here's my plan to use Syncovery:
I have two servers (Windows / Linux) and many machines in an intranet.
Automatically sync files from many ...

I know it doesn't have the attended mode on Web browser for Linux.
But I need to let user select the specific file to sync, not all files in the sync folder.
Is there any way to achieve this goal?