We don’t support this now. We’ve had a lot of discussion on the topic, and the general situation is this: In Unreal, mouse movement direction directly maps to screen movement similar to behavior in a game (as if you’re dragging the camera through the scene). In Maya, it’s the opposite, as if you’re moving the scene while the camera remains still.
I’d love to hear whether you still want this option after a few weeks of using UE4 and becoming familiar with the camera controls. Here is the complete doc: