Add 2nd signer to a signed document?

[dawnj82430837]

I originally set up a document with only one required signer.  That document has been signed, but I now need to add a second signer. I tried to upload the completed document, but it removes the original signer, which I do not want to do.  Is this possible? How can it be done? Thanks!

[SimonATS]

What you are doing now even if the original signature wasn't removed is to create 2 different agreements. One for the first signer and one for the second signer. The best thing to do is to create a new agreement with both signers included from the get go. And