Asuming your driving line through the corner is correct.

Change only one setting at a time in small increments

From more to less influence

• Increase front ride height
• Decrease rear ride height
• Increase rear anti-rollbar stiffness
• Increase rear spring stiffness
• Increase rear slow bump and front rebound damper stiffness
• Increase differential power locking
• Increase differential pre-load

Generally if a car is understeering out of a corner the weight is shifted too much or too quick over to the rear. To counter that, the rake of the ride height can be increased or the rear suspension stiffened to not allow the weight shift rearward as quick. Additionally by increasing the differential power locking and/or pre-load can help with rotation out of a corner.