Doing a search I found this, it's certainly not intuitive, but works well:
- Using the smart tool, hover over the automation line so the mouse icon shows a plus (+) with no arrows
- click and drage the area to add automation points around
- release the mouse button, and move the mouse up until it shows a plus with arrows on it
- click and drag up or down, the automation points will be added and the selection will adjust to your mouse movements
It's different, but better than the old way, IMHO. Just wish it was more obvious, or at least better documented!
Peace!