I really like that you can package security into Customization Projects using the Access Rights area.
In practice, I always like to select all of the screens so that I know I'll pickup all of the security. But it's REALLY tedious to do this. I usually use my keyboard (down arrow, spacebar, down arrow, spacebar, etc.), but it still takes a long time and my hands hurt when I'm finished.
It would be really nice if there was a SELECT ALL button at the top of this window: