Distinguishing mail from two separate users of same Outlook & comp

[Guest]

Person 1 & person 2 have separate addresses; same (Earthlink) account, using
same computer. Have configured Outlook to be able to receive mail for both
addresses, & in-mail is distinguished as being either for person 1 or person
2. But now, how to do for out-mail?? How to change whatever needs to be
changed, to shift outgoing messages to be from either person at will? Right
now, if create & send a message, it only comes from person 1. Is it an
earthlink log-on setting? Or an Outlook log-on setting? Or other?

 

[Guest]

When you're composing a message, there should be an "accounts" button at the
top of the compose window. Just pick the one you want to send from.