how to set with multiple sign on same email (es.husband & wife)

Adobe could be better with eSignature. Its subscription is too expensive. Not worth it at all. I have been trying to get signatures from my husband and wife, who share the same email address. Even though you write their name in the advanced options, but don't show up their names when you assign them to the signature field. It shows some colors like yellow, pink, etc, but you don't know which color belongs to whom (so primitive feature). Maybe they may come up with a solution in the future, but if they do, the sales team will sell it as a "premium" feature!