The "Contracts" Stage is the second stage of a WorkGroup and the point in which the following persons come to an agreement: the Client with the Collaborator Professional and the Referral Professional with the Collaborator Professional. Each one modifies the contract and, in order for it to finalise, both persons must select the same contract revision. Using the "View Contract ..." links you modify the contracts and using the "View Contract ... Selection" links you select the revision you are satisfied with.
After the contracts have been finalised, the printable and digitally signed versions of them are created. You may find more information about them in the corresponding questions.
Note that in every WorkGroup the contracts are two and formed between two persons each. There is no contract between three persons.