Send an approved agreement to its required signers for online signature.
Your signer gets a private link to sign the agreement. Your coworker gets a separate link to view the request.
Your renewal agreement reaches the right signers before its deadline, and you get an email showing who was invited and when.
Your agreement reaches the named manager for online signature, and the requester gets a confirmation in the email thread.
Your final agreements reach the signers you list, and you get a reply with the invitation details in the original email thread.