Deleting Online (Norton Server) Backup

Question:  How do you safely erase/remove/delete/purge your "online" (actually Norton server) backup file?

 

Background:  I used Norton online backup to save favorites etc., then ran out of space so I decided instead to save the information onto an external HD.  Frankly, nothing is crucial so I could probably leave them there forever, but thought it best to delete them.  Okay, now I want to erase/remove/delete/purge the "online" files as unnecessary.  I've found numerous explanations, but the language used is unclear and I'm concerned I may be deleting the "set" or original from my HD, rather than the server.  When I go to Norton Online Backup, I find three files, but can only send email links and download - not "purge" as the instructions indicate. 

 

Here are a couple of the solutions I found - but I'm looking for someone who has personally performed the function and erased/purged their online file.

 

https://www-secure.symantec.com/norton-support/jsp/help-solutions.jsp?d...... [not sure what the rest is]  and

 

https://nobu.backup.com/OnlineHelp/en/NOBU_Help0034.html  [this may not relate to Norton 360, but what do I know....]

 

Okay - so any who has personally erased/deleted/purged, etc. their online date (not CD, HD, etc.), but online, please provide me simple step-by-step procedures that even I can follow.

 

Thank you in advance.