File/Folder selection with virtual sub-clients

I am testing the virtual sub-client feature. I have defined some virtual sub clients for my computer. All of them appears at Status panel, but, I don´t know how to make the file/folder selections for each subclient. Where can I define those selections? In server web admin interface? In client application?

Second question: how can I define that I want to make simultaneous backups with virtual sub clients of my computer? In the “main” computer object? in the child computers? in global settings? in all of them?

Many thanks.