Correct, but make sure you are using the Auto FOV set to Hdeg 16:9 and 103 to automatically fill in the correct FOV to use for these games.
All methods can be used, it depends on what you want to achieve.
You should try the most common methods (like MDV 0%, 100%, 133.3334%, MDH 100%) in a game like Apex, and see when one of them feel best for all aims. If none are good, then you should look into the other methods to see if they might suit you better. Their descriptions are in the instructions.