Hawera South Taranaki
The subject says it: Can you discover a tile with a group of figures?
Sorry, if that is a silly question, but the paragraph about discovering on page 19 of the base rules seem to stress on a single figure, so I am a little bit unsure, although I assume, that you can do discover with groups.
I've always played that A group can do it. i.e. if I have a stack going to attack another city etc.