You can countersign the existing signatures on a document. This will apply your signature to their signatures. Your countersignature will only be valid if the signatures it signs are also valid. If signatures have been applied to prior versions, the countersignature will not sign those versions; it will only countersign signatures on the latest version.
Countersigning a document can be used to provide additional authority for a signature or signal approval for another user's approval. For example, a manager might choose to countersign a document to verify that they have approved their employee's signing the document.
To countersign a document
To countersign a document
Note: While all supported browsers can view a document's signatures, Web Access only supports adding a new signatures (including countersignatures) to a document through Microsoft Internet Explorer.