How to improve the IQ levels of artificial intelligence

Yesterday. My friend played this game.they say the AI’S level is too low… I want to improve this levels. But I can’t find which way to set this level.I searched one hour…NOT FOUND!

So Can you tell me how to set this level?

What do you mean by “improve AI level”? My suggestion to your friend is to buy subscription for WoW and at least try to complete Tomb of Sargeras on Heroic difficulty.