I want to be able to turn off autofocus.

I have read the user manual. I understand that I cannot turn off the auto scale function. I understand that the manufacturer wants the majority of users to feel comfortable using it. But for the trading method that I use The auto scale function is the one function that causes the most headaches and hates for me. It's too much guesswork and most of the guesses are wrong.

I would like to know how much I will have to pay. If you want to have the option to turn off and on the auto scale. And added an autofocus button when the graph falls out of the frame.