We are a staffing company, and as such, we have to collect our field employee's hours in accordance with our customer's workweek. Some of our customer's workweeks start on Monday and some start on Sunday. The workweek start date is a global variable in Zoho Books/Invoice. If you would create an optional Project level workweek start day variable, then you would make your software applicable to a much larger audience. Staffing companies account for a very significant portion of the overall workforce labor pool. There are a LOT of staffing companies. You are making it very difficult for them to use your product to collect working hours per the correct workweek period. Thank you for the consideration.