Make a selection. > Hierarchy panel > Link Info button > Inherit rollout
The Inherit rollout constrains the links between a selected object and its parent for any axis of position, rotation, or scale.
See also
Procedure
To prevent inheritance of X rotation in a hierarchy:
Select an object, then turn off X in the Rotate group on the Inherit rollout.
Interface
X, Y, Z: Turn off any axis in the Move, Rotate, or Scale group boxes to prevent inheritance.
When you turn on an axis, transform information passes from the parent to the child for that axis. When you turn off an axis, transform information on that axis is ignored by the child.