1 - Tap the menu button - Program System should be highlighted. Tap E
2 - Scroll (Turning the big knob) to highlight the New York City system and tap E.
3 - Scroll to highlight Edit System Option and tap E.
4 - Scroll to highlight Set Lockout and tap E
5 - Scroll to highlight Lockout and tap E.
Hopefully whoever set it up for you assigned Quick Keys to the different systems. In that case, to turn on/off the system you would tap its Quick Key while scanning. However, without knowing more specifically how the scanner is set up, it is difficult to provide any specific instructions for doing that.
Can anyone point me to an understandable way of using Group Quick Keys? I have my bcd396xt programmed into groups within systems right now, but have assigned the groups the same quick key number as their parent system. The result is that I have an "all or nothing" situation for the different towns I go through...