There are 3 primary roles in DocuSign:
Signers can sign documents, create and save signatures, and track the routing status of workflows in which they are identified as recipients.
Senders able to do all of the signer actions and can send envelopes to others or be designated by a sender as a 'manage envelope' role and have the ability to change routing for subsequent recipients for a given envelope.
Form Masters can create forms
(and have all of the access of signers and senders
).
Note: You do not need an account to sign a document that you receive via DocuSign.