Basic Windows question: checking all checkboxes in a list

So I'm setting up Windows 7 parental controls as an application restriction policy, and I'm presented with dozens of programs, each with a checkbox. Is there any way to check all of these checkboxes at once, with e.g. a keystroke, instead of clicking through them? Or are checkboxes not designed for that?

(And yes, I'm aware that I really ought to know this.)

Edit: I'm an idiot. There was an "Allow all" button, but it wasn't showing because my netbook's screen was too small. Consider this solved.