Z-index

Using TBS-5::

I know that if you have a parent-child element relationship you can set the child to ‘foreground’ in the properties panel to have it appear in-front (lower z-index) of the parent, however this does not seem to go beyond the first-level.

I read that if I use the ‘alt-arrow’ keys it should move elements up and down in z-index, but this does nothing on my computer (a Mac).
http://www.toonboom.com/products/toonBoomStudio/eLearning/tipsTricks/convertCutOut.php

The 3 choices of ‘type’ are; normal, foreground, and background, thus if I create 3 elements as follows:

Parent(normal) → child(foreground) → grandchild(foreground)

I should be able to see the grandchild on top of the child, and child on top of the parent if all goes well.

Am I correct? Perhaps there is some good tutorial on this?

Select the Select-Tool (6) / select the Element in Camera-View /
hold down option+command (Mac) and use the up- and down-arrow keys
for back and forward movement (Z-depth) /
left- and right-arrow keys for Left and right movement /
watch the Properties panel for the changing Offset values…
(add the shift-key for bigger increments)

Another option for Z-depth movements / select the Rotate Tool (8)
select the Element in Camera-View / hold down option+command
until you see the double-arrow / drag that arrow up and down
for back and forward movement…

If you like to set Keyframes for the above movements /
select the Transform Tool (7) / but hold down only the option key /
then use the arrow keys for movement…

As far as I know, if one choses the Foreground-Type for an Element…
this Element will stay in front of anything else whatever their Z-position…
The same would apply to the Background-Type for an Element…
this Element will stay behind of anything else whatever their Z-position…

If one would apply for any reason those values in a hierarchy…
then the top Element in the hierarchical ordering will e.g stay in front of the child…
but will overrule any other hierarchical structure in the same project…

Regarding your example:
The “child” will stay in front of the “grandchild” but both stay in front of the “parent”…
Change the “child” to Background… the “grandchild” still stays in front of the “parent”

Regards
Nolan