In the Client Manager, there are equivalent functions for document storage found in an organization, but there are a few different document archives in a Client Manager:
Document archive in the Client Manager
You can find the first at Documents > All documents in the left menu. Here is a common document archive for all users in the Client Manager, which functions in the same way as the document archive in an organization (the "Boardroom"):
Document archive for specific organization within the Client Manager
There are two additional document archives for each organization connected to the Client Manager. You can find these at Organizations > All organizations > [Organization name] > Documents:
Internal documents
The "Internal documents" tab has a document archive for files that should only be available to the Client Manager and its users. No user in the organization sees these files (provided they are not users in the Client Manager as well).
Shared documents
On the "Shared documents" tab, there is another document archive that is shared with the organization by creating a folder with the name of the Client Manager is created in the organization's document archive. This is how it might look in the organization where the "Product Demo (CM)" folder thus contains the shared content:
Documents and folders stored in this document archive can only be read and downloaded within the organization.