We have several groups using an instance of JIRA, to simplify Group A and Group B. All jira administrators are located in Group A; however Group B doesn't want to give anyone from Group A privileges to see any Group B issues or participate in Group B workflows. Is it possible to create multiple jira administrators and prevent one or more of them from seeing a project, effectively having a jira administrator for Group B projects and jira administrator for Group A. I do realize that this is possible, to some extent, with project administrators and permission schemes but a jira administrator can usually bypass these. Am I missing something?