As needed, you can edit groups of contacts that you have created.
To edit a contact group
Open the Messenger window.
On the Contacts tab, right-click a named group, and then click Edit group. This option is available only if the selected group is one that you created.
The Group Setup dialog box appears.
Set up any of the following options as needed:
Group Name - Change the name for the group.
Group Type - Change the group type:
Private - With this option selected, when someone replies to the sender of a message, the reply is sent only to the original sender. In effect, it is as if the original sender has sent the message to everyone in the group individually.
Global - With this option selected, when someone replies to the sender of a message, the reply is sent to every member of the group unless the original sender is not a member of the group; in which case, the reply is sent only to the original sender.
Note: When someone replies to the sender of a message, the status of the Reply to ALL checkbox indicates whether that reply is being sent to one person or to a group.
Users - Do the following as needed:
To add
a user to the group, select that user under Available
Users, and then click the Add
button 
.
To remove
a user from the group, select that user under Users
Selected, and then click the Remove
button 
.
Click OK.