Deleting Online Backup Sets - How?

How do I wipe away all the online backup sets? I don't see any options for deletion when I log onto the backup webpage.

Here is a support article with the steps to delete Online Backup:

 

http://us.norton.com/support/kb/web_view.jsp?wv_type=public_web&docurl=20110323150637EN

How do I wipe away all the online backup sets? I don't see any options for deletion when I log onto the backup webpage.