You can use the middle mouse button to click in the visible area of the current model in order to automatically move it.
Procedure
Use the middle mouse button to click in the model window. A move icon is shown:
Move the mouse pointer away from the move icon displayed, in the direction you want to move the visible area to. The movement speed increases the further you move the mouse pointer away from the icon, and it decreases the closer you move the mouse pointer toward the movement icon.
If you want to end auto-move, click the middle mouse button again.
The visible area has been moved in the corresponding direction.