Uncheck Primary Phone button in NXT?

Hi… I'm forcing myself to use NXT for basic data entry and still can't do very, very simple things. I want to change an email address type to "Unsubscribed" and I want to uncheck the Primary (star) button. I can uncheck and check boxes at will in database view.

However, in NXT if someone only has ONE email address it looks like you cannot UNCHECK the primary button. So now I have a record with the PRIMARY email address being an UNSUBSCRIBED email.

And why are there no "Comment" fields on phone numbers/email addresses anymore?

Am I missing something simple?

Answers