Google Contacts has a feature that allows you to group a batch of emails together. Then, when sending an email or sharing a document, all you have to do is type in the list name, and all the emails are populated.
Quick Link: https://contacts.google.com/
If you are making a list of Viking emails, be sure to log in with your @viking account.
This title is unique only to you. But be careful, sometimes labels are visible to others.
If you didn't email this person before, their email will only be available under: Directory
After you click on the label, click out of the window. A notification at the bottom of the website will tell you if they were added to the label.