Office 365 (Outlook 2016 for Windows) - Edit a contact
You can add information about your contacts --- such as their birthdays and anniversaries, or the names of their spouses and children. Information that you add appears only on your computer.
- On the Navigation Bar, click People.
- In the ribbon, in Current View, click Business Contact.
- Within the contact listing, double-click on the contact you want to update. The edit contact window will be displayed.
- Make the desired modifications and click Save & Close from within "Actions" group.
Note: if the contact is within a group, use these instructions to modify the contact.