Larian Studios Forums Divinity - Original Sin Divinity Original Sin - Help/Tips/Tricks + skills armors and weapons

Thanks! So i can have NPC companions for blacksmithing and etc? That is good.
But how do they level up?Do i need to travel with that NPC for leveling od i can put points on that NPC after hiring?

I want to have one lone wolf, one normal + one NPC.
So, i will kick my NPC mage and hire one with blacksmith. And after that i will hire my mage again? But hiring cost money. So will i need to pay same money again?

And about tenebrium. I will have archer, warrior and mage (NPC), so i do not need to put any point to weapon skill for archer and warrior? And just wait for tenebrium skill. That is weird.. Btw when i will be able to use and craft tenebrium?