If you are the owner of the signature request, you can edit the sent signature request. Click the Edit link in the toolbar of the submitted signature request.
An editable form opens.
You can change the name of the contract, add or remove reviewers / signatories who have not yet reviewed / signed, or change the text of the messages.
You can also make changes to advanced settings. For example, you can enable and disable the signing order. Some of the settings control workflows during the life of the contract, so they can be changed only until the review or signing has started.
After making the changes, click the Save button and the signature request will be updated. Deleted participants will receive an e-mail notification of the deletion and the added reviewers / signatories will be invited to review / sign the documents.