A:AnswerAs long as they are DX or FX series lenses they will work. FX series lenses will take full advantage of the images sensor while DX lenses will crop (they'll appear zoomed in and not full frame similar to the digital zoom on a smartphone).
A:AnswerI don’t think there is a particular setting for this. The camera will know the battery grip is in place and as long as you are in the “Continuous High” shooting mode I believe the extra power will allow the camera to “ramp up” the speed it moves the photos out of the buffer and to the card.