After choosing the "Canonical tables" option, it will be shown a list with the path for possible tables set. You must select a table to edit.
You can edit a selected item selecting the desired item. After changing it, click on Accept.
After selecting the Add option, a window will be shown asking you to entry with 'name' and 'address'. Fill in acording to your needs, as described above. Click on Accept to add this new entry.
To delete an item on the table you must select it first, so that the edition window will be shown. Click on Delete to delete this item.