There are two sections to define in the footer. The first section is the Footer Text. This shows up on the left hand side and is entirely optional.
The second section defines the links that will be displayed in the footer. You can have a lot of links, if you like, and they will be displayed in three columns on the right 2/3 of the footer section of the page.
It is strongly recommended that the URLs be relative links (/<dept>/<page>). If they show up as IDs then they will be harder understand when you come back to it another day.