Office 365 (Web) - How to Create a New Contact
1. Go to People and Contacts. To create a contact, select New and select Create contact.
2. This will open a blank contact form. Fill in any details that you want. Select the icon to see more options for that type of information. For example, if the person you’re adding to your contacts has multiple phone numbers, select the next to Phone to add phone numbers.
3. When you’re done, select Save to save your changes or Discard to cancel.