Can you explain me what a root node is and how i access it ?
Basically when you add any atom to scene there is usually single control node for it.
With person atom is slightly different, since you have multiple joints (hands, head, hip, legs, etc...) each with own controls.
But you still have main (root) person control node (it's "walking/running" icon at the bottom (by default at 0-0-0).
You can select it by clicking on that icon, or cycle select person atom icon on taskbar, or from any of joints (including eyeTarget)
When you move root node other joints also move...simple
(on previous question i told you that you can lock movement & rotation, but you can also disable "freeze physics while grabing" on controls 1 tab (if don't wanna physics to reset if you accidentally grab root node).
There is also "detach person root control" option (controls 1 tab), you can check it and move root and than uncheck to attach person back to root node (if you wanna reposition root node).