Multiple Required Signatures

Hello,

I documents that require 4 signatures, with a minimum of 2 DIFFERENT signers. I set up the document to require 4 DIFFERENT signers. But what happens or how can i set it up in case signature 1 & 3 are the same signers? How does that person sign multiple times if i use:

{{              *_es_:signer1:signature                     }}

{{              *_es_:signer2:signature                     }}

{{              *_es_:signer3:signature                     }}

{{              *_es_:signer4:signature                     }}