I'm the only administrator and we have meetings running 7 nights a week. I'd quite like to not have to unexpectedly sacrifice 4 hours of my time finding a bug

I'm the only administrator and we have meetings running 7 nights a week. I'd quite like to not have to unexpectedly sacrifice 4 hours of my time finding a bug in the config. Nor do I really want to spend (at least) a weekend to double check all the install/config works correctly to start with. I'm busy enough with the day job without starting a second one. I admin this voluntarily and I'd rather work smart, not hard. EDIT: You can see my reply to the parent for user side technical effort. A helpful hint might be to think about this problem in people terms, rather than systems terms.