Event Handler to trigger action on remote server


Please excuse the newbie question…

I am trying to wrap my head around this. I am using a gui to manage my nagios config files (nagiosql) which is a great application. I have not had any problems until now. I am trying to reduce the time needed by a real person to log in and restart a service if its down. Event Handlers appear to be the answer. I have read pages upon pages of notes on people successfully doing this. However, I can’t seem to figure it out. Could I get the abridged idiots guide to Event handlers?? Even better, if someone is familiar with Nagiosql and has set this up, could you tell me how you did it? My event handlers option doesn’t allow me to enter in all the same data it appears everyone else is able to enter.