Asuming your line and you are trail-braking into the corner enough you can adjust the following general settings.

Change only one setting at a time in small increments

From more to less influence

• Increase rear ride height
• Decrease front ride height
• Increase front splitter angle
• Decrease rear wing angle
• Decrease front spring stiffness
• Decrease front anti-rollbar stiffness
• Increase front tire toe-out
• Decrease rear tire toe-in
• Decrease differential coast locking and pre-load
• Decrease front slow bump and rear rebound damper stiffness
• Increase front negative camber
• Decrease rear negative camber

Help with turnin is achieved by shifting more weight to the front in that phase of the corner, which can be achieved by altering the rake of the ride height, front suspension stiffness to allow more weight to shift forward, increasing the front tire toe-out, or by adjusting the differential coast locking and pre-load.

Additionally in high speed corners, aero changes will also have a big affect on the balance of the car through the corner, as well as decreasing rear tire toe-in will induce a bit more instability of the rear of the car and help with turn-in.