Grimoire of Sacrifice, Command Demon Ability?

I was looking at the Grimoire of Sacrifice and saw the tooltip says:

Sacrifices your demon pet for power, gaining its command demon ability

What I’m wondering is, where do I see/use that ability? I can see each pet’s spells (when the pet is active) to see what those abilities are, but I don’t see how to use those spells once the pet is sacrificed.

Appreciate any help!

They will be listed under “Warlock” tab in your spellbook when you use Grimoire of Sacrifice on a pet.

Ah, I see now. Thank you! It looks like I can pin the “Command Demon” ability and it’ll swap out depending on which pet I sacrifice.

Thanks again!