group in outlook

[maxwell2k19]

Hi All

One of my office365 user is trying to create an email group in Outlook.  He receive an error saying I must contact the administrator before he can add internal and external email addresses.  How level of access do i need to give the user.

[#2]

@maxwell2k19 

Is he creating a office group, or a distribution group?

In the office group, he can only invite members of the tenant and Azure AD guest users. Check the "External collaboration settings" in Azure AD.