The original thought behind our service is that all parties should know under what circumstances they go into in an agreement. Therefore, the signing parties are equally important as the information that is agreed upon.
To add or remove a party to a case that is not yet completed (signed by all parties), you can recall the case, which then goes back into draft-mode, modify it and re-send it. The ones who had already signed, will be invited to sign again. This also applies if you have to change an incorrect e-mail address or a misspelled name.