How to add an additional bone?

Hello i use the A.R.T tool a lot and its amasing,

But i have some questions…

Can we create a quadraped animal, or a quadraped robot rigg with this tool ?

Can we add modular bones on it ? Or may be a personal module like a paw we can connect on it ?

As far as I know there is currently no functionality in A.R.T to create anything other than bipedals; you can add extra bone segments in the generation (i think maybe even after its been made) and probably do something up with a bit of rearranging from yourself, im really not sure about that though.