The Shift Schedules S1-3-300 Excel spreadsheet automatically assigns up to 300 people to up to 3 shifts per day in response to your scheduling needs and your employee's preferences and qualifications while enforcing rest times between shifts. The program automatically assigns days off, creates schedules for up to 1 month and produces individual and group schedules. The spreadsheet has an overtime tally and scheduler so you can easily assign and keep track of overtime hours. Microsoft Excel or compatible spreadsheet program is required. During the free trial period restrictions apply with respect to the number of schedules displayed.