Can echo be programmed to use two different names

[Tigone]

I have one echo dot and one echo device.  I just bought my husband an echo dot for Fathers Day.  When we talk to his echo, it answers by my name instead of his, even though I set up his profile and account on the Alexa app. I think it has something to do with my Amazon account.  Should I set up an Amazon account for him, and register his dot on that account.  Would that impact the way the devices communicate with each other?

[jwlv]

Deep in the Alexa app's settings, there is an option where you can have Alexa recognize voices. I don't use it, but I've seen it in the settings before. Based on what voice Alexa hears, it'll respond to the correct person. I believe that means if two people have their own calendars, to do lists, etc. it'll give the corresponding information to the person asking.