DSC 1832 system with a single 5508 key pad -

1. Do I need to "enroll" my key pad?
2. I use NC devices on all zones and need to have them programmed as NC = ON
3. I use a PIR in the entry hallway and need it with a 40 sec. delay to give me enough time to turn off the system.
4. All other zones are Instant Alarm

Thanks