Comment 2 for bug 220255

Hi Len, thanks for your report. I think that the problem is that the users-and-groups application is a gnome-based (think Ubuntu) application, and Xubuntu does not install the gnome-based help system (the Yelp application). If you wish, you can install the Yelp and ubuntu-doc packages, and this should resolve the issue for you. Xubuntu has previously not installed Yelp so that we could keep the system a little lighter.

Xubuntu does have users-and-groups documentation, but it is just included in firefox. Click on the life-preserver icon in the top panel, and then look for the documentation link.

If this does not answer your question, please re-open this bug. Thanks!