How to set up key switching?

Sorry I just got Isboxer and don't know anything. How can I make it so when I press space, only some of my characters use their ability, and when I press C or some other key, the other characters use their ability? (So my priests don't have to heal everytime my wizards use their blast). Thanks!

[Alge]

You do this with Mapped Keys and set the Target of the Keystroke Action to be an Action Target Group. I'm not at my normal computer now but will provide more detail later if these links are not enough to get you started. There may also be a Mapped Key Wizard option that gets you close but I can't check now.