To manage the 'useful links' you need to be logged in as a user with Admin privileges (you need to be in the Admin access group). First you need to log in.
When you view the 'useful links' page and you have the right access permissions, you will see the page with a number of buttons and extra widgets showing. These are such as 'add a row', and various widgets to enable you to edit or delete the rows that are there: .
Note: the set of 'useful links' can be thought of as a set of rows, one above the other. Each row has a title and content, but either may be blank. When you edit a row, you will have a mini word processor to assist; alternatively, you can produce the content as raw html.
Caution: You will not be able to use the print button unless you enable JavaScript on your browser.
Caution: You will not be able to see the menu unless you enable JavaScript on your browser.