This applies if you already have a Profile with another email account(s) and would like to have a totally separate profile for a new mailbox
From the Windows 10 start menu type Control Panel
From within Control Panel open Mail (Microsoft Outlook).
NB: If you don't see the view below click "View by:" (top right of the screen) and select 'Small Icons'
Show Profiles
Click Add:
Add the profile name:
Add your details:
1. Add your name
2. Add your email address
3. Add your password (twice)
4. Click Next
Wait for it to complete.
Ensure all the settings are correct and accepted. Click Next
Make sure if you want the Profile to be the Default set it to "Always use the profile"
Close and open Outlook