The DRL'* only operate during the daytime and won't come on unless you have the car in gear and they turn off when the car is in park. If it'* getting dark out, the regular lights will automatically come on and stay on even when parked. To alleviate this, when in Park turn the Twilight Sentinel on and then back off and the lights will turn off.
If you want parking lights on only, then do the above and then you can turn just the parking lights on via the lever on the steering column. Or when parked, turn the lights on, then off, then to parking lights and your parking lights should be on only (make sure your fog light switch is off).
Hope this answers your questions.