User A on Site A.
User B on Site B.
Workflow W: User A apply (Document A) to User B -> User B reads Document A and (a) reply (Document B) or (b) rejects the initial application.
Architecture wise, where should document A, and document B live in Alfresco, given the restriction that each user can only view/edit documents from their site?
Thank you in advance.
(ps: we use alfresco community edition 5.0)