CHANGE-TAPRO:,40,OST40BLF,,,,,,,,,VACANT,PU,KNOVR,SPLT,CALLOG,CONF,,,,,,"OS40BLF";
CHANGE-TAPRO:,40,OPTIA1,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME;
CHANGE-TAPRO:,40,OPTIA2,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME;
CHANGE-TAPRO:,40,OPTIA3,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME;
CHANGE-TAPRO:,40,OPTIA4,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME;
CHANGE-TAPRO:,40,OPTIA5,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME,NAME;

You will need a power adaptor to run the BLF
Ensure you unplug the phone when you are physically adding on the BLF

Is this going to be the only 'Operator' ?

All of the above keys are added as NAME - of course you might need to add some/all in as DSS to get them to light up for internal extensions.

If this is to be the Operator and it needs to change the Night Service Destinations (NAVAR) then you can activate patches to assist with that.
LED signalling at switchover device for night server
and
Signal active night station via LED