Use the space bar to check and un-check boxes. List of Values. Banner has a feature looks up codes. You've probably used this already. LIST brings up a list of codes that are valid for the field.
Level is an example.
F2 will pop-up a little window that shows GR and UG as valid codes for level. This is much more natural, but there's a gottcha. Here are some general things to notice. F Radio buttons. Sometimes there is a line of choices that look like check boxes but with parentheses instead of bracktes.