Basically, there is a command called /petname [whatever] which names your next summoned pet.

But as a Conjuror I found having all my pets with the same exact name was very boring. And it was really annoying having to type /petname  each time before summoning each of my 3 pet types that I can have up in any given encounter.

So I made macros…

Now, while in combat I can summon whatever pet and also have it named, with the click of 1 button.