Sailing in Indonesia means you need to be flexible and adaptive. Almost nothing is as it is in western countries and that includes finding and buying fuel. I'm nearly out of diesel and it's time to track some down.
Now the easiest way would be...
Top left of screen is a back button. Returns to previous screen.
If this is the controller the OP is referring to. I have seen some describe the RC1A as a “Smart Controller”.
I have always used the joysticks in & to the bottom. I didn't even know there was "takeoff" button. I know there's a "return to home" button, but never saw the takeoff button.