I am pretty sure I cast a heal spell (into my hand---waiting for a target) and then clicked on a char in team window and it cast on that person. That should be really close to anything you would want to do. Of course it is also just a targetable place, so you can select a person through the team display and then cast on them (once targeted) also.

It did just change like < 1 week ago, though, so might have to make sure you get the newest version. I LOVE curse client to update my addons and Jamba is on curse.