Change gardtec 800 partset programming

[Wato]

I have a gardtec 800 alarm system that is working fine. I want to delete a zone from a part set mode but can't find where to change the setting.

there are 3 setting modes. full set.  2:- part set for when in the building and in bed at night.  1:- part set for garage only.

8 zones on system so when set for garage zones 3,4,5,6,7,8, are off. I want to add zone 2

Any one know how to add the missing zone? 

[MrHappy]

do you have the engineering code ?

[PeterJames]

As above, its not in the user programing settings