A group can have multiple owners.
Note: A Google Group cannot be the owner of another Google Group.
In my GfEdu domain this morning:
- In the Admin Console, I can add a group as an owner of another group. (Based on the documentation above, I should not be able to do this, but I can.)
- In groups.google.com Manage > Direct Add, I can add a group as a member of another group, but I can not change the member group to be an owner or manager. Error message: A group may not be the owner or manager of another group.
I assume that at some point the code in the admin console will catch up to the documentation, so I made adjustments to how I manage group ownership. (I don't use GAM for that task - I use a custom program that reads our school database and then adds/removes students, parents, and employees to all of the groups as appropriate.)
adding manager empl...@sstx.org...Error 400: Invalid Input: memberKey - invalid
adding manager empl...@sstx.org...Error 400: Invalid Input: memberKey - invalid
Adding the group as a member works as expected. Adding a group as an owner or manager fails as expected.