Did you find the guy in the plumber section of the yellow pages? What a botch ‘fix’ that’s been done here…. How much did it skin you?
Is it a wireless system your running?
What message are you getting on the panel?
Have you made sure the screw next to the tamper microswitch is protruding enough out the back of the bell box to be pushed against the surface of where the siren is mounted?
Ignore the above I think I’ve now understood what your looking to do…
Remove the door from Area B and change Area B’s exit mode in the engineers menu to timed
What are you trying to achieve?
Are you wanting the shed to be set along with the house or independently to the house?
Post a list of your inputs and the settings / zones for each
I and II on the fob shouldn’t set B either. You’ve changed the defaults it would seem.