ss wrote:

I have 2 external PIRs operating 2 floodlights all in different
locations but connected so that 1 PIR will turn both lights on.
I need to adjust the timings lux/sensitivity.
Before I climb a ladder can someone advise what the priority is for the
LEDs, egÂ* if say the 2 LEDs are set for timing at say 15 seconds and the
other at 3 minutes, if the 15 second LED triggers the lights does it go
off after 15 seconds or 3 minutes.
Does the one that triggers it set the timings or can that be overruled
by the other?

It's a "logical inclusive OR", so both lights will be on at the same
time, if one, the other, or both PIRs are within their activation period.