As needed, you can delete groups of contacts that you have created.
To delete a contact group
Open the Messenger window.
On the Contacts tab, right-click a named group, and then click Delete group. This option is available only if the selected group is one that you created.
A confirmation message appears.
Important: If you delete the group, all messages that were sent to the group will also be deleted.
Click Yes.
A message appears.
Click OK.