In the right-hand box is a 'centralised' list of every subject and issue which is of interest to you the user. You can enter items here at any time. It does not matter whose name appears in the name field at the top of the applet. All these items are visible from any individual's record.
The left hand box contains an extract from the list on the right. An item in the right hand list is copied into the left hand list by clicking it in the right-hand window. The idea is to copy into the left hand list items which pertain to the person whose name currently appears in the applet's name field. These will be subjects in which you and the named person share an interest, and issues on which you have shared concern.
The lists in people's left hand boxes are used by group link (an extension to personal link's Integrated Applet) for generating a list of people who share a particular interest or concern with you with a view to your contacting them in relation to some event or trend. This is useful when trying to find whom to ask for information or advice on a particular subject or issue.
You can or course delete an item from an individual's specific list (ie the list in the left hand box). You do this by clicking it. You can also delete unnecessary items from the main list in the right hand box. Again by clicking it. However, in this case the item will only disappear provided it is not currently on anyone's specific (left hand) list.
The above box is simply an image. When implemented as an applet, the operation of each button is displayed on the browser's status bar when the mouse pointer is over the button concerned.