Changing Security mode

I am having a problem with my security system on my 07 G6. It is arming itself when the car is unlocked. When i shut off the car and open the door it chimes at me three times and the security light flashes, then when i close the door the security arms after 30 seconds or so. i have read on some other forums on that you can switch the security modes from passive to RKE. I was wondering how to do that.