Thrusters Balance is a function that allows the distribution of thrust between the bow and stern thrusters to ensure the boat moves parallelly during lateral movements when using the joystick.
When using the EZVector remote control joystick with proportional bow and stern thrusters, it is likely that the bow will move more than the stern, causing noticeable rotation of the boat.
The balance adjustment compensates the thrusts to mitigate this effect.