I use FitDay Classic, and that's where you have the check boxes. Look at the top of the page to the right and you should see "Classic." Clicking on that will take you to the Classic version and you should then be able to follow the suggestion as above from dread.
Click Recent Foods; you will see a list come up of the most recent ones. At the bottom, it says "see more" or something like that. When you click that, the days come up and then you can check the boxes as described.
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days