Creo Interactive Surface Design (Style) > Views > Show All Views > To Resize the Panes in a Four-View Display
  
To Resize the Panes in a Four-View Display
1. Move the pointer over the sash that divides the view into four panes. The pointer changes its shape to a double-headed arrow.
2. Drag the sash. The arrow indicates the direction in which you can drag the sash.
You can drag the vertical sash horizontally and the horizontal sash vertically.
You can also drag the intersection of the two sashes horizontally and vertically.
To reset the sash to the center, double-click the sash.
 
* You cannot drag the sash beyond a certain limit. The sash location and the corresponding pane size apply to a single window only within the current session.