Admins can edit calibration group names after the group is created.
From the Calibration Groups Overview:
Navigate to Admin > Performance > Reviews > Select the cycle.
Within your review cycle, navigate to Calibrate Ratings > Calibrate groups.
Select the pencil icon to the right of the group name to edit it.
Save changes.
From the Group page:
Navigate to Admin > Performance > Reviews > Select the cycle.
Within your review cycle, navigate to Calibrate Ratings > Calibrate groups.
Select the calibration group to view the calibration group page.
Select the pencil icon to the right of the group name to edit it.
Save changes.