collapse two points

[PBc]

Hi Forum!

I have a problem:
I want to collapse 2 points of a curve, not to one point, but with a distance. I know this function from many 3D programs like Blender or Cinema4D. See Figure 1.

Figure 1: Here the problem is shown simplified on a cube--> trapezoid. But this problem is much more general and can be applied to many different shapes! (I know the trapezoid tool!)

I always use workarounds for this e.g.
1: I use an auxiliary curve and then align the points and delete the auxiliary object. See Figure 2.

Figure 2: Workaround 1: Use helping curve/object (in black).

2: I only work with coordinates. (I do this very unwillingly!!)

So here is my question is there a key compination to achieve this? 
The problem sounds so simple.....
AD is such a good program so I can't believe I am the only one with this problem.

Thanks for your help!

[PBc]

just to give you another example.

[GarryP]

Have you tried using the Transform Mode – you can switch it ON via the Context Toolbar.
See attached video.

[PBc]

Perfect!

Thank you!

[GarryP]

You're welcome.