Set domain name of Office365 Group at time of Group Creation
When creating a Distribution List or Mail Enabled Security Group through the admin panel, the domain portion of the list/group is enabled and you can choose any domain that's been set up for the account. For Office365 groups it's locked to just the default domain. We are a family of differently domained companies in the tenant and we need groups for all of our domains. I keep seeing multi-domain support as being 'Boom it's Done' but the ability to create groups in any domain is not done.
Couldn't agree more.