Hi Psygorn,

re:
> I just wish it was doable by two moves!
>
> 1- selecting the desired face!
> 2- scaling it!

Sorry but that's just not how things work with NURBS modeling. If you know you want to make a shape that's scaled on one end like that it's better to just directly construct it that way instead of building something else and trying to squish it.

NURBS solids do not squish around in the same way as polygon modeling does except in some special cases.

- Michael