Updated for 7.0
This will display or hide from members and admins a Previous Balances if the user has a credit or debit on their accounts from before the Carnival Year rollover.
Go to Settings and Configurations by clicking the Gear Icon in the top right. This will take you here:
Within the horizontal navigation bar under Users, select Settings. This will take you here:
Use the on/off toggle to change the setting for Display Previous Balance in the box titled Account Settings.
Administrators will always be able to view a user Account History, whether the Previous Balances are visible to Members.