You can remove one or several client accounts at the same time. To remove client accounts:
Select the Clients shortcut in the navigation pane. The page will open displaying the list of registered client accounts:

Select the clients, whose accounts you wish to remove by checking the corresponding checkboxes.
Click Remove Selected. The Removal confirmation page appears:

Select the "Confirm removal" checkbox to confirm removing, and click OK. If you decide to not delete these client accounts or wish to modify the list of accounts selected for deletion, click the Cancel button.