B-Morph is a utility to make your own custom bones, such as the ones here.
As I said, you might not have to worry about the sub_movement_dummy, as it could be automatically calculated. You check the parts you want to change the size of, then enter the number in the number box and click apply. Then you will want to save a b-morph file, and export the bones over your hero's bones.

Checkboxes for each body part, plus an "all" checkbox for each section.

A spinner to set the checked parts to a number.

a "save B-Morph" file option(re-load the current settings later).

An "export to .bngcf" option(save your bones).

Templates(pre-sets you can load)

Preview window

Open .bngcf file (currently has a default)

Advanced and Begginner interfaces (select from menu)