Private Documents with Client

Private Documents with Client

Is it possible to have a private document sharing section with Clients only?
For example, I have to provide 3 different quotes from Sub Trades to a client so we can decide what Sub Trade to use. I would like to use ZOHO projects instead sending him emails.
What I need is that only certain users/clients can see those quotes/documents. I don't want other contractors to see the quotes.

Thanks,
Andreas