Looking for How to create Group in Outlook 2010, the process of creating contacts groups is similar to earlier versions, but there are some distinctions.
Select Contacts.
Give a name to your contact group within the text box named Name.
Select Add Member under the Contact Group tab.
Select the contacts you'd like to include in your group.
To add the contacts you want to add to the group, click Members.
For a return back to the Contact Group dialog box, select OK.