Select "If you see the below administrative interface..."
Follow the steps provided
2. Yes, you are able to rename any email user on your account at anytime! This would also allow the content from the previous email user (all sent and received emails) to remain in the email. If you do not want the content to remain, you would delete the email user and then wait 5 minutes for the credit to release so you can create the new email user. You can use the steps below to change the username:
Inside the area labeledAccount Information, clickEditin the top right hand corner.
Change the First Name, Last Name, Display Name, and Username
After selecting your new information, click theSavebutton.
3. The interface for these options would be the same on Microsoft directly or through GoDaddy Office 365. If you'd like to know more, I'd recommend reaching out to our live support team so they can walk you through all of this.
JennH - GoDaddy | Email Specialist 24/7 support available at x.co/247support