[xwiki-devs] Adding subgroups, and adding users to groups

Me again :) XWiki has been allocated 1 day a week to my time, that day being Monday, so it's probably mostly Mondays that you'll hear from me. I'm setting up our spaces, groups & users and have discovered the following: "Subgroups" are really confusing and apparently have no hierarchy, and can even be shared amongst top level groups and can refer to one another (or self!) When I add a subgroup, then click on it, I get told that the page does not exist. Shouldn't it be a new group to which I can add users and subgroups? When adding Members to a Group, the Auto-Find is really neat - but I can add XWiki.hhulme by clicking on the suggestion as well as hhulme. The same is true of subgroups.