Creating and Managing Contact Group in Outlook
Create a contact group or distribution list in Outlook for PC - Microsoft Support
On the Navigation bar, click People.
Under My Contacts, select the folder where you want to save the contact group. Usually, you'll select Contacts.
On the Ribbon, select New Contact Group.
Give your contact group a name.
-
Click Add Members, and then add people from your address book or contacts list.
Add people to a contact group in Outlook for PC - Microsoft Support
-
On the Navigation bar, click People to view your contacts.
Under My Contacts, click Contacts.
-
Double-click the contact group that you want to add members to.
Click Add Members, and then choose the list that you want to add a contact from. For this example, choose From Outlook Contacts.
In the Search box, type the person's name or email address.
Double-click the name to add it to the Members box, and then click OK.
Click Save and Close.