i made the changes but how do i use it?

Do I need to install like what we do for the nagios-plugins (ie. running configure & make commands)? I’m puzzled as to what to do to get it working: I also need:
(1) WAS installed on the Nagios server, or
(2) put those files on each WAS server that I’m monitoring?

I guess not option 1 as it’s defined in check_was.servers but option 2 check_was has variables which won’t exist here
I’m new at this so I need help. Hence, my rating is reflected as this is not intuitive for someone new to this.