Outlook supports multiple accounts, this is particularly useful when a group of people are sharing a common account, e.g. finance. If you want to add an additional account to Outlook, this guide will help you through the process.
Open Outlook and click on File:
Click Add Account:
Fill in the new account email address and click the Connect button:
Fill in the account password and click the Remember my credentials then click OK:
The account should now be added:
Scroll down to the new account: