Gamepad Buttons for rover

So, I am using a gamepad to control rover - no problem. However, I have some pwm relays I want to operate. I may be missing something, but is there a “toggle” function for the buttons?? For example, if I want to turn lights on and off using channel 9, I can assign a button to RC9, but I can’t see where I toggle that function when I press the button?

Any help appreciated.