Introduction to Polygon Modeling - MAXON CINEMA 4D R16 Studio: A Tutorial Approach - page 108

Figure 3-7 The center points to be selected
Figure 3-8 Scaling the selected points of Computer mouse
13. Press and hold the 9 key and select the top and bottom points of Computer mouse by
using the SHIFT key, as shown in Figure 3-9. Next, release the 9 and SHIFT keys. Now,
scale the selected points along the Z-axis, as shown in Figure 3-10.
14. Press and hold the 9 key and select the top and bottom center points of Computer mouse
using the SHIFT key, as shown in Figure 3-11.
15. Scale the selected points along the Z-axis in the Top viewport, as shown in Figure 3-12.