What is Auto-clock out?

Auto-clock out means if any employee clock-in but missed to clock out then the system will wait for 16 hours from the start of his then system will clock him/her out and will display the last login/logout time as out time. For example. if any employee clocks in at 10 am and missed to clock out at 7 pm then it will show as 10 am IN time and 10 am OUT time in attendance with status as AN and AC in red colour in attendance logs.