Just want to add some more automation information here…
On a track basis you can highlight multiple consecutive (or all) automation points and adjust them up/down by the value typed in the info line. I usually highlight the points I want to change by holding the shift key and use the left/right arrow keys.
Changing automation values on multiple tracks is not as easy but it can be done. Every so often I have used the PLE (I think only available in CB Pro) to do this. The method is described well by vic_france in this link (third post down). The conversation about automation is interesting and a few other tips/thoughts are presented.
Regards 