I have no owners manual. Where do I add automatic trans fluid?

Fluid is Dexron2E, my information only says dipstick for transmission is at the rear of the engine compartment passenger side rear. I believe it is filed through the dipstick tube on your Sportage. Kia as a car manufacturer put a lot of great technical information and work shop manuals on line for free for Kia owners. www.kiatechinfo.com but I am not sure if they go back to 2000.