Create a contact group in Outlook

On the Navigation bar, choose People .

Select Home > New Contact Group.

In the Contact Group box, type the name for the group.

Select Contact Group > Add Members , and then select an option:

• Select From Outlook Contacts.

• Select From Address Book.

• Select New E-mail Contact.

Add people from your address book or contacts list, and choose OK. To select multiple people, hold down the Ctrl key as you choose members. 

Choose Save & Close.

Select Home >New Email.

Select To.

In the Search box, type the name of the contact group.

Double-click the name to add it to the To box, and then select OK.