Select all surface of selected group?

So… Yeah, that is the problem. I know I can select all surface of selected brush by pressing shift+b and I can select all surface with the same material by pressing shift+t.
But here’s the thing - I have a bunch of group actors made of BSP brushes (and when I say bunch, i mean A LOT). I want to change their surface material but selecting each brush individually and pressing shift+b will be a pain in the butt and a huge time loss.
Is there a way to select all surface of all groups selected in the scene outliner?

Just do a right click onto the group in the scene outliner -> select -> select all surfaces :slight_smile:

That’s not selecting all surfaces of a group but all surfaces in the level.