I have a problem to reset function (fn) setting roles to its default setting. Somehow I managed to change Fn3 to Fn6 to AF, but now I when I try to change Fn3 to Fn6 to some other role, I cannot because it skips Fn3 to Fn6. Please refer to the attached picture and advise. I know these are useful functions and I would like to know how to set all of them. Thank you.