If your flight departs from the K-L gates in the satellite terminal add another 10 - 15 minutes to your schedule. You have to take the automatic shuttle between the main terminal and the satellite terminal. For this you need to get down to the underground levels which takes a few minutes, have to wait for the shuttle and get up again to gates in the satellite terminal. Just check your boarding pass if it says G or K. G is main building and K is satellite building.