Docusign send document to multiple users

I am trying to use the Docusign Send Document action to be able to send to multiple users: 

I have three questions:

1) Can I send document sets? 

2) Can I send multiple documents. Perhaps in an envelope. (this is different from sending an envelope that sits on Docusign website) 

3) How can I send docusign documents to multiple users? I looked at this workaround https://community.nintex.com/message/14380?q=Docusign#comments but this does not seem like a very elegant solution. Does anyone know of any recent developments in the area.

3b) Can I send docusign documents to a group? 

Thank you very much!