To delete subaccounts:
Select Server, and then Entity Change Management.
Open an ECM document.
Select Edit, then Add Account Change, and then select Delete Subaccounts.
Under Available Accounts, select an account. Use the Shift and Ctrl keys to select multiple accounts.
Optional: In Available Accounts, select an option in Filter Accounts to limit the accounts displayed.
Optional: In Or Type Account Number, enter an account number and click Add.