Where do you check and fill the transmission on your 1996 Volkswagen Passat VR6?

this tipe a car usually comes with a sealed transmission ,,,,means no stick to check level fluids, the fluid is presure in to it ,,do not open ,, take to dealer or somebody that work in transmission ,,,also know at the dealer will cost u about 18 dollars a qt. of Transmission Fluid so be ready,,,,,good luck.......................