How do I move a parented object hierarchy to world origin I have carefully created and parented object hierarchy. I did this for ease of moving the ensemble of parts in the scene. But I am pulling my hair out doing what I thought was a trivial afterthought: move the ensemble to world origin.

What is the magic incantation for something so simple?
Select the parent of all the hierarchy, and in the object panel, manually set its location to 0,0,0. The shortcut is Alt+G.

It should keep the position of the children relative to the parent.