When I advance the throttles to say 75% I do not hear any click sounds. Is there a setting for this? I have already pressed Autoflight, Nav and Prof before starting.ThanksKen Fairbanks

Does the FMA (Flight Mode Annunciator) above the altitude tape say "T/O CLAMP" without a white box around it and writing "ATS OFF"? Then when you advance the throttles past 75% does it change to "T/O THRUST"? If it does then the ATS is working correctly and you should hear the click as it changes to "T/O THRUST" and if you don't then you should check some sound settings. If it doesn't change to "T/O THRUST" then the ATS isn't doing it's job for whatever reason and thats why you don't hear the click . Also it should change back to "T/O CLAMP" at 80 knots.