change Event Scheduler status in mysql

I think you mean that you have 5 events on one scheduler. Right?

Here is how you disable one event:

    ALTER EVENT myevent
    DISABLE;

Here is how you disable the entire scheduler (all events):

    SET GLOBAL event_scheduler = OFF;

All this can be read at http://dev.mysql.com/doc/refman/5.1/en/events.html How to disable one event is here http://dev.mysql.com/doc/refman/5.1/en/alter-event.html