I have just fitted this alarm panel with a remote keypad. The alarm works fine in full set, but I have placed a pir at the top of the stairs and want to have a part set setting ie at night have the downstairs on and the upstairs off. However the instruction manual is quite confusing. I need to know how once in engineering mode to have a part set setting, ie the sequence of numbers to prees once I am in that mode. For information the stairs pir is wired into zone 2.