Wavey 3D shell problem

[Paopao]

Hi guys,
I need to modify the shell's height in few points (as indicated by the arrows). Any idea how I can do it? Is there a easier and quicker way to obtain an ondulated path (in CAD It would be the equivalent to extrude a shape along a 3d path).

I am trying to obtain a wavey shape very similar to SANAA's Rolex Learning Centre but with my shape.

Thanks you very much,
Pao