Coverage area not limiting unit requirements correctly

I recently decided to try to use the "coverage area" setting in the Dispatch centre for handling islands of the coast of the UK. Specically in this case the Isle of Scilly.

The area has 5x Fire Stations and all of them are assigned to the dispatch centre which has the "create your own coverage area" setting enabled. This should mean that no mission can spawn that require a speciality unit requiring 6 more stations if im understand this setting correctly. In this instance, Fire Offciers which are stated to be required once of you have built 6 stations. However, a mission requiring FOs has been spawned by one of these stations

So either this dispatch centre setting doesnt override stations else where or it is not functioning correctly or this mission should unlock after 6 fire stations not 3.

Buying FOs is little more than a minor inconvenience at this time, but if missions start spawning that require more speciality units, it could be a major issue and defeat the entire point of this setting

Quote from mjkerr

Looks to be operating correctly to me
The restriction is 3 out of 5 Fire Stations

This mission requires personnel you do not yet have, so you now require them

Except in the fire station itself it lists the requirement has needing FOs after 6 stations, not 3.



Surely that should override everything else?

Quote from mjkerr

As an aside
I have a template for a Fire Station, based on the number of vehicle doors the building has in real life
One door - Fire Officer, Water Ladder, CARP
Two door - Water Ladder, RSU
This gets round the smaller missions where either a Fire Officer or Aerial vehicle is required

My default is normally 1x FO on every station and has worked well for me on the other 100? fire stations, but for this little nugget isolated from my main AO, I was hoping this dispatch centre setting would prevent missions from spawning requiring excessive amounts of specialised units from spawning at these stations.

Station says FOs only needed after 6, this small AO only has 5. But one has spawned.... Something is not right somewhere