Group owners should be able to update the display name and description for the groups they own. This is part of http://beaker-project.org/dev/proposals/enhanced-user-groups.html
Considering that adding group description is now tracked separately in BZ #960359, this bug will hence concern with updating group name and display name.
On Gerrit: http://gerrit.beaker-project.org/#/c/1937/1
User guide changes will be made in a separate patch.
As with bug 908172, note that the group description feature has been deferred for 0.13 (it will probably be added in a later release)
Beaker 0.13.1 has been released.