Note Note: The features listed on this page are supported only in GroupDocs.Signature Cloud V1 GroupDocs.Signature Cloud REST API supports to sign a document with multiple signatures. For example, you can add Text and Barcode Signature to a document at same time. To put list of signatures on document (Cells, Images, PDF, Slides or Words) Signature API provides an object SignOptionsCollectionData that can contain one or more signature options. Please, use signature options which appropriate for current document format...."PdfDigitalLocation", "visible": true, "password": "1234567890", "certificateGuid":...'PdfDigitalLocation', 'visible': $true, 'password': '1234567890', 'certificateGuid':...