As per title.
I have essentially half of my work that needs to be moved, and I want to move it sharply, snapping as it was snapped before to the other object.
I had to reduce the height of the floor of a building, and I need to bring down all the rest of the building.
I could of course just "put it there, more or less", but as I'm here and I want to learn Blender for good, I prefer to wait and ask.
I've spent now almost one hour between attempts, moving the cursor, selecting a vertex in edit object mode, etc. and watching tutorials.
I even tried to move the origin point of the object that must be reference for the group of objects to move, to the protagonist vertex. Doesn't work even like this.
A realy mistery.