After creating a new resource group definition, the next screen shows you the conditions form but you have to click edit before you can edit them. A related annoyance is that the text area is white and looks editable, but it isn't (whoever handles this may want to spin this off as a separate JIRA).
rev1221 - after creating a new group definition, navigation immediately takes you to the edit page instead of the view page now; updated the messages a user receives after group definition create/cancel so they're more accurate;
Stole this one from corey since i can see while testing other jiras that this is working. AFter you put in the name and description and click ok, the condition box is editable. rev1250.
This bug was previously known as http://jira.rhq-project.org/browse/RHQ-328