As a system admin you can delegate the management of groups to users, either by direct authorization or by authorizing a group of users. System admins use Confluence administration > Users and Security which can be found in the list to the left of the confluence administration page.
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Further down the list you can find the Users and Security heading
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Custom Space User Management > Delegated Group Config.
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Adding a delegated group and authorizing users/groups
This is the view of the delegated group config, the table on the left stores groups that you would like other users/groups to manage. The table on the right shows users and groups that are authorized to manage a group, this table will populate only when a delegated group is selected on the left.
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