Automatic button on lower oven

This is how I reset my U1420NOGB/FD7907 NEFF double electric oven that I inherited also without an instruction book.
There are 4 buttons in a row and then a timer knob that moves left and right.The first button is black,second has an arrow,,third has an arrow and fourth a hand symbol on it.Hold down together, the black button and the arrow button next to it.Without releasing either,twist the timer knob clockwise(to the right)until correct time is showing.Do not release the other buttons at all ,until time is ok.If you miss correct time keep going ,dont go backwards.When time is correct,,release black and arrow buttons and auto will stop flashng ,and oven work.If auto doesn,t stop flashing at this point press the button with hand symbol (manual)on it once.