A simple task like allowing a user to administrate a SharePoint group without exceeding with too strong permission isn't really intuitive in SharePoint 2007.
Here's a howto:
General information
- The Group Owner of a SharePoint group has permission to add / remove users from a group.
- The Site Collection Administrator has permission to add / remove users from a group.
- Only one person (or group) can be assigned as the Group Owner.
- SharePoint Groups belong to the Site Collection.
Set an individual as the Group Owner
- Navigate to the Change Group Settings page. One way to do this is:
- Browse to any site within the site collection.
- On the Quick Launch Click People and Groups.
- On the Quick Launch Click on the group you wish to modify.
- Click Settings – Group Settings
- Change the Group Owner to the desired individual.
Set a group as the Group Owner
- Create a SharePoint Group for all individuals that will have the Group Owner permissions (such as MySite Group Owner.
- Add individuals to this group.
- Follow the steps for setting an individual, but enter the SharePoint group name. HINT: You can use the address lookup to help find (and insure correct spelling) the desired group.
Credits for this post goes to: http://geekswithblogs.net/redwards for posting this solution.