Handle group owners the same as group members over all api's
Nowadays it's needed to make a group owner also a group member in at least the following cases:
- List group plans
- Create group plan
When you're provisioning groups via code, a very common provisioning scenario, the 'creator' is only added as owner to the group and not as a member. Via the UI you first have to add someone as a member before 'promoting' him/her to an owner. In that case the user will be both owner and member.
We cannot see the functional need to also add an owner as a member, so we guess it's a technical/design choice.
Maybe it is possible to have some kind of 'Groups Administrator' or 'Groups service' role in O365 to be able to get/manage all groups and underlying endpoints?