Some people are getting confused when migrating from earlier versions of Outlook to current versions of Outlook ‘2016 in reference as to how to manually configure an email account since the UI has changed.
The first screen that gets presented is the one below which requires you to enter an email address.
Once the email address has been entered, be sure to click on <Advanced Options> which may not readily appear as a clickable link. That will result in the checkbox option for “Let me set up my account manually”. Checking that box results in the next window to appear at which point, select the account type you wish to manually configure which would normally be applicable for a POP3 account
