Crews rotate, the line must not stop, and the rota has to know both
A factory on two shifts runs an early from six and a late from two; a factory on three adds a night from ten and keeps the line going around the clock. People come as crews. A crew, B crew and C crew rotate through the three shifts a week at a time, so nobody lives on nights and everybody knows where they are in the cycle. The line needs the whole crew to run: operators on every station, a setter for the changeover at ten, a quality inspector before the pallets go to despatch. Maintenance has its own window on the same line, usually a night early in the week, and the two plans have to meet on one rota rather than in the corridor at midnight.
The rota most factories run is a spreadsheet with a tab per week, printed on Friday and corrected in pen by Tuesday. Its failures repeat every month. The night from 22:00 to 06:00 is split across two dates and the hours come out wrong. An operator swaps a Saturday with a colleague at the smoking shelter, and the team leader learns about it at six in the morning. The overtime agreed on the floor to ship Friday’s order is written on a whiteboard, wiped, and rebuilt from memory when payroll asks.
Below is how a factory of sixty on three shifts looks in InShift: every person with the positions they are trained for, the rotation cycle as a table, the month with every crew on it, and the shift manager on the floor with the planner in their pocket.