# Have location of grouped objects relative to parent object

I am creating a wall section which will be a wall with a hole and in the hole's place a couple of doors and so on.

For ease of putting things in place I first create an empty node. Then add a wall and doors as children of the empty node. If I relocate the empty node, the meshes of the wall and doors follow along.

What bugs me is I want to locate the doors and wall relative to the location of the parent, empty node. How do I do this? It seems that even though an object has a parent node, the Location in X/Y/Z is specified in the global world. It would be easier to specify this relative to the parent node. So with a pair of doors I could just set something like X: -0.5 for the left door and the right door would get 0.5. Is there any way?

• Note: I guess I should use tag "parenting", as "groups" seems to be a different thing in Blender. However no parenting tag exists. – Jonny Aug 22 '14 at 8:55
• Try using animation drivers – someonewithpc Aug 22 '14 at 12:20
• Try switching the translate mode of the child objects to local instead of global. – Samir Rahamtalla Aug 23 '14 at 7:49

parent.matrix_world * child.matrix_parent_inverse * child.matrix_local