The software contains functionality that will allow you to copy and paste items from the main food database into the custom "MyFoods" database.
Browse in the database to the food you would like to copy. You will see a small "C" icon inside a box displayed at the top of the screen - tap on it. This will copy that food.
Next select "MyFoods" by tapping on the drop down menu icon on the silkscreen area of your Palm device.
Create or select a category if you wish to and then click on the small "P" icon inside a box displayed at the top of the screen. This will then paste the copied food into the selected category.