Creating custom armature - Parik27/DragonFF GitHub Wiki
HAnim properties
To quickly add HAnim properties to selected armature bones, switch to Edit Mode. Select the desired bones, then from the top menu choose Armature → DragonFF → Generate Bone Properties. This command automatically generates and applies the corresponding HAnim properties to the selected bones.
If you need more precise or custom property assignments, you can do this manually. Select a bone and go to its properties panel under the Custom Properties tab. Here you can add, edit, or delete necessary HAnim properties.