Crashed friends car!

Last night my me and my friend were handed the keys to my other friends car to change stereo settings, as he sat in the front seat we convinced each other to scare them by driving down the road and by the time we came back our friend who owned the car was on the phone with the cops and in the heat of the moment my friend who was driving drove into a rock that was in front of the parking spot which scratched the front of the owners car. The cops ended up coming and arresting my friend because she asked to press charges.

The major issue was that he had alcohol in his system, he’s 18 and blew .0798 which would be legal if he was 21 but he also doesn’t have his license.

Our friend who owns the car understands the situation now and wants to drop charges but he was charged with dui, reckless driving, driving with a license, driving without permission.

Please help out with what can be done to help my friend out he was processed and has a court date in 2 weeks.