I read http://support-th.canon-asia.com/contents/TH/EN/8202790200.html and thought "well, I wonder if I'll remember that."
As to focus, I think you want to use manual focusing. https://www.google.com/search?q=80d+manual+focus finds the manual and prior discussions about Manual Modes.
Two problems. One every time I turn camera on (fully automatic mode) the flash turns on and I have to manually turn it off. Anyway to set the camera to not automatically start flash? Also camera won't take photos because it doesn't think there's anything to focus on. How do I get it to take it Anyway? I see online something called al servo mode, how do you turn that on?