Office 365 Groups Aliases

[itsbrad]

Is it possible to create additional aliases for Office 365 Groups? For exampl group name could be HR@contoso.com, I want to create hrteam@contoso.com, humanresources@contoso.com, hrdept@contoso.com ect?

[#2]

Just be clear I am referring to having multiple email address for the one group.

[#3]

This should be done by running something like
Set-UnifiedGroup <group> -EmailAddresses @{add="new_address@contoso.com"}

[#4]

Depends if you're on Exchange Hybrid or not. 

I believe its possible if your Exchange Environment (including MX Records) is fully on Microsoft Cloud.

If you're on hybrid, groups aliases do not work currently, especially if your MX records point onPrem. Sadly