Comment 6 for bug 926401

Reason to only to do this on per-user basis: because not ever usery wants it. If this is for a computer only you use, it's irrelevant where you put it, except for the fact that putting it in a location other than a home folder means you risk it being overwritten when you upgrade.

As the link says, read the man page if you want to know all the possible settings. It's thoroughly documented. If you have a question about a specific one, I'd suggest putting something out on the lubuntu-users mailing list or #lubuntu on IRC.

I should point out if the information is readily available on how to do something and you haven't read it, that doesn't constitute as a bug. If you want it to be easy, that's a wishlist item.