Arm Auto Spoilers and Disarm autospoilers is designed if you want to use if with 2 buttons. Button 1 for Arming the Autospoilers, Button 2 for disarming. So when you push Button 1 it will always arm the autospoilers, and pressing button 1 again will not disarm it since it’s stays armed. Only when you press Button 2 will it get disarmed. Good for switches that have 2 active virtual buttons, one for UP position, and one for DOWN position.
Set auto spoilers arming is used for when you have a switch that only has 1 active virtual buttons. In other words, things like a slider where if you slide it on, the joystick will “hold” that button active. And when you slide it off, the joystick releases that same button, into neutral input. which means it only has either persistent “ON” or it releases that button without any input. Useful for sliders or switches that hold its position.
Toggle positions Arm spoilers are for alternating states using the same button. So if the first position is OFF, pressing it will turn in ON, then if you press it again, it will be OFF.
These terms don’t just apply to the spoilers, but to everything else in the controls.
Here’s the explanation in greater detail: