When you click the Start Menu icon for Green shot, it initiates capture

Currently, when you click the icon in the start menu, you get this message:

Open

because the program is already running. It would be great (for old timers who don't use short cut keys) if that would instead initiate a capture like pressing print screen does. If there's already a way to do this, I'm all ears but as of right now I'm having a hard time getting people on board with this program due to the lack of this feature.