Packmaster Hunter

[Hberthou]

I'm making a Hunter with the Packmaster archtype in Hero Lab Online.

One of their abilities lets them choose to either add a level to an existing animal companion or get a new one.

Adding a new one is easy, you just add a new under "Classes"->"Hunter"->"Animal Companion"

But I can't find any way to add a level to one of the existing ones. Is this a bug or can someone tell me how to do it?

Also, I can't seem to add tricks from the skirmisher ranger archetype to the animal companions, as a hunter can, according to their animal companion ability.
Again, is this a bug or can someone tell me where to add them?