Moving the camera with the Q and E keys is part of the view navigation controls, not part of the pivot point choice.
The effect of the keys is different depending on whether you are using walk or fly mode and the controls are described in more detail here. The default mode can be started with ⇧ ShiftF and either fly and walk mode can be chosen directly from View> Navigation> Fly Navigation or View> Navigation> Walk Navigation.
This navigation mode [walk] behaves similar to the first person navigation system available in most 3d world games nowadays. It works with a combination of keyboard keys (WASD) and mouse movement. By default the navigation is in the 'free' mode, with no gravity influence. You can toggle between gravity and free mode during the navigation (↹ Tab).
Move the mouse left/right to pan the view left/right or
move the mouse up/down to tilt the view up/down.
Move the camera forward/backward (W/S).
Strafe left/right (A/D).
Jump (V) - only in 'gravity' mode.
Move up and down (Q/E) - only in 'free' mode.
Alternate between 'free' and 'gravity' modes (↹ Tab).