@tromero23 If the envelope is fully completed and all Recipients have taken action then there is no options to change or correct that envelope to add additional Recipients or Actions. If the envelope is not fully completed then you can correct the envelope and add the same Recipient at the end of the current envelope workflow or re-arrange the Recipients to add that Recipient and the action of the “Initials” field.
If the envelope was fully completed the best option is to “copy with field data” , add the new DocuSign fields for the Recipient and send it back through the entire workflow.