aikenadam Hi, not sure I fully understand which feature you are missing - for me it works very well to have a "standard working hours" tag of 8h per day, and then the App counts how much time I work in excess or less, and keeps a running total of how much I worked beyond 8h per day that I work (and am neither sick nor on vacation etc.).
You could to the same with 40 h per week, but then you need to enter tasks for vacation and sick days - otherwise those will create negative overtime.