There are different departments with each having multiple shifts, each of the shifts having different start time & end time. (For example, department A has 3 shifts with 1st shift time of 6 am - 3 pm, 2nd shift time of 10am - 8 pm, 3rd shift time of 2 pm - 11pm. Similarly, department B has 2 shifts with 1st shift time of 8 am - 4pm, 2nd shift time of 1 pm - 9 pm & assuming an occupancy of 50 people in each shift & about 50 visitors overall). How to calculate FTE for this kind of occupancy? What number is to be considered for the showers, bicycle racks & water use calculations? In actual we have about 7 departments & each one has varying number of shifts, times & occupancy. I also tried putting the occupancy numbers in a 24 hour cycle to check the overlap of the occupant & it turned out that the maximum number of occupants (200) are in the premises only for about 1 hour. So if I calculate FTE based on this maximum number, it turns out to be very low (200 X 1/8 = 25). Also please note that none of the occupants share the desks.