Allow us to select an alternate domain when creating a new group
Currently when creating a new Office 365 group you cannot select one of your alternate domains from the drop-down box.
To use an alternate domain you have to go to Setup, select domains, and then make whatever domain you want be your default domain. Only then can you create a group using that domain.
Once you have your new group you then have to go back and reverse the process. The only other option is to launch a PowerShell session. Completely ridiculous in 2019.