I will guide you through the process of adding signatures to documents using the productize library. First, navigate to the library and select the desired agreement or document. Then, go to settings and enable the Signable feature. Choose the signatory, whether it's the client's lawyer, a specific person, or the client themselves. Give the signature a name for internal use and save it. Return to the document and select the client signature option. Place the cursor where you want the signature to appear and click the plus sign to add it. Save the document and future clients will receive a request for an E-signature. Repeat this process to add more signatures to other documents.