Excel sheet

I'm looking for an excel sheet to do a work schedule for bus drivers.

6 buses

Each bus needs 3 drivers for rotation purposes.

2 drivers will be on the bus at the same time due to the long trips he does, the driver will work 28 days.

1 driver will be on his 14 days off

The excel will show the work schedule for 6 months ahead and can add more drivers in the future.

3 drivers, 2 of the three will be ON and 1 will enjoying his days Off.

Thanks