Our Jira admin recently retired and I have been tasked with taking over. Honestly, this just slipped through the cracks when she left and I forgot to go through it with her. I'm hoping you can help me out so that I don't have to bother her about it.
There are several Groups that I don't think we need any longer. I can't find them being used, but I also don't want to just delete a Group that may be "system" vital. I'll just list them below and I'd welcome anyone with feedback.
balsamiq-mockups-editors
_licensed-bamboo
_licensed-confluence
_licensed-fecru
_licensed-jira
_no-one-at-all
Obviously the Jira and Confluence ones raise an eyebrow, but I have other accounts that I believe to be more current...site-admins, administrators, users, confluence-admins-..., confluence-users-...