Inverted (3D) Option - 3D option is for inverted and normal stabilization.

Accelerometer As Inclination Sensor - OFF reduces the sensitivity of the accelerometer and for taking off from an inclined plane.   ON requires the use of the autotrim function to calibrate the inclination of the  sensor.

Rotor Protect Clip Function - This option is to avoid tailboom strikes.  It will limit backward cyclic input.

Rotor Protect Gain-Down - Reduces Position gain setting when altitude is detected below 1m.

Optimer Pos. Hold for... - Select which kind of disturbances the sensor measurements are optimized.

Pilot Channel Default - If the Pilot channel is not used then either horizontal or position hold can be selected as its default stabilization mode.

Reserved - N/A

Rotor Protect Clip Level - Defines the backward cyclic travel.

Horizontal and Position Mode:

- Image from the manual

As noted earlier I programmed the horizontal / positional gain to my right slider.  Check with the diagnose tab to make sure the light assignment is is working according to your setup.

Hor. Gain (Sensor Total) - Defines gain sensitivity of aileron and elevator.  If the gain is too high the helicopter will begin to oscillate. 

Hor. Stick Gain - Defines the stick input sensitivity. 

Stick Sens. Reduction - For finer stick control when altitude is below 1.5m.

Expert Settings

Manual Override - Defines the speed the control of HeliCommand is overcome by the pilot.

Elevator Gain Portion - Reduce this gain if elevator oscillation occurs.

Stick Response Acceleration - Defines how direct and rapidly  the stick movements will affect the attitude in both horizontal and position hold.

Position Mode Only:

Position Sens. Gain - Defines gain sensitivity of the optical ground speed sensing system.

Pos. Stick Gain - Defines the stick input sensitivity

Forward Freewheel - Defines the strength of pilot manual control.

Expert Settings

Positioning Speed - The agility for aiming a position and for velocity changes on stick command.

Position Hold Power - Holding power of position hold mode.