Can I grant permission for a user to manage project users and groups

[Amina ElShal]

Hi, 

  I'm the JIRA admin for my cloud domain, Is there any way to grant another user the permission to add/delete or activate users for a certain project without being an admin ??

if any user becomes a member of  the administrator group can he revoke my access to the system , even I'm the owner ??

[Joe Pitt]

Project admin can manage project roles. Only JIRA admins can manage groups. Using roles is prefered by many long time users because it allows the project lead/admin to control access to the project and gets the JIRA admin out of the loop.

[Jason Stein]

Amina, the short answer is that yes, if any user becomes an admin, then he can revoke access to anyone.

What I have done is to author a separate web site which uses the JIRA CLI and adopts the appropriate authority of the JIRA CLI user.  Then I give the users that need to do the user/group admin stuff, access to that web site and I keep their authority in JIRA to a very limited authority.