modify a document after being sent - adobe sign

We just purchased 5 licenses for Adobe Sign.  The biggest complaint from our users is the ability to modify a document after it has been sent for a signature.  I did some digging and found this page - https://helpx.adobe.com/sign/using/modify-document-sent-for-signature.html

However, myself (admin) or my users do not have this option to modify a document after it has been sent.  I reached out to Adobe support but I have no heard back.