FreeCAD Assembly 3 - Manual movement of the base of a piston mechanism

Hello folks!

I'm doing tests on the latest version of Assembly 3 and learning how this Workbench of the FreeCAD works.

In the video I do a simple assembly to test some properties of Assembly 3.

I worked with Assembly 2 plus, but I found limitations in moving the part in relation to its hierarchy of constraints. The Assembly 3 has extensive support of manual movement of nested assembly.

The following link is a part of the official tutorial that describes this mechanism of manual movement of the part, considering the constraints applied to the structure.

Link: https://github.com/realthunder/FreeCAD_assembly3/wiki/Common-Operations#part-move

How would you assemble this part using Assembly 3?

Let's exchange an idea.

Link to download the video part files:

https://drive.google.com/drive/folders/1b1_j-CLql6fM_O8lrjNGECV1B1rD27TV

My FreeCAD settings:

Version: 0.19

Revision Number: 22894 (Git)

Release date: 2020/10/31

Click in the image for expansive.