All this is complicated by the times for the late shift changing throughout the week, the finish time varies from 8pm to 10pm depending on outside booking and inschool events, the start time obviously varies to accommodate the finishing times.
Further problems arise as there are certain weekly duties that need all three of the team to attend. For example the weekly fire alarm test, this requires 2 people to be in each of three places so requires 6 people!
There are always moans from those higher up the food chain about the amount of overtime paid to the premises team and announcement made that 'steps will be taken to reduce the overtime bill'.
The latest idea is they should work until midnight and therefore start later, as you can imagine that idea in extremely unpopular.