Find the Subscriber Group in the list that you want to edit, and then click the corresponding View button
in the right column. (The buttons in the right column appear when you hover the mouse pointer over the row.)
Click in the Name field to change the subscriber group name. Names cannot be longer than 32 characters and can contain only letters, number, dashes, and underscores.
See Validation and Fixing Data Errors for more information on entering valid data and fixing invalid data.