Creating a signing block automatically for a document can be tricky. We created a demo on ZumeForms, that can handle signing parties where they may be either individuals or directors of a company. And optionally individuals may or may not be required to sign based on a drop-down list. Check it out, download the parts and feel free to use it as a pattern for your own forms and documents.
You can download the form parts here. Once you have downloaded the form you can import it in the form builder.
have a go for your self below.