IM USING KYLOCK'S TIME SYSTEM VX 1.5. HOW TO MAKE EVENTS RESPOND TO TIME? PLEAESE HELP ME :O

^^^^^^^ Please***** not pleaese

I've found a great time system Kylock's Time System VX 1.5 BUT. how do I make events respond to time??. example;
Npc wont give hero the chest key unless it is 9.00pm

here is where I found the script (The script is awesome and simple) but the steps on how to call it honestly dont help.
http://www.rpgmakervx.net/index.php?showtopic=2298